CVE-2025-31115

highpriority · track · 0EPSS 0.007 · 52 %ileCHDEEUFRNLRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.68% (52nd) EPSS
CVSS 7.5 · high
Is it mine?
171 products
Check your exposure
Who says so?
10 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzma_stream_decoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedC50abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedC80abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedFT50abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedMT50abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedPPC3100abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT30abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT50abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT80abb_psirt

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedC50cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedC80cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedFT50cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedMT50cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedPPC3100cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT30cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT50cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • FixedT80cisa_csaf_ot

    The problem is corrected in the following product versions: Product Terminal OS Version - PPC3100 1.8.1 - C50 1.8.0 - C80 1.8.0 - FT50 1.8.1 - MT50 1.8.1 - T30 1.8.0 - T80 1.8.0 - T50 1.8.1 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.

  • MitigationC50abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationC80abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationFT50abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationMT50abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationPPC3100abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT30abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT50abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT80abb_psirt

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)siemens_psirt

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)siemens_psirt

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)siemens_psirt

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)siemens_psirt

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)siemens_psirt

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)cisa_csaf_ot

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)cisa_csaf_ot

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)cisa_csaf_ot

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)cisa_csaf_ot

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)cisa_csaf_ot

    Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

  • MitigationC50cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationC80cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationFT50cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationMT50cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationPPC3100cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT30cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT50cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • MitigationT80cisa_csaf_ot

    Refer to section “General security recommendations” for further advise on how to keep your system secure

  • No fix availableSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)siemens_psirt

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)siemens_psirt

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)siemens_psirt

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)siemens_psirt

    Currently no fix is available

  • No fix availableSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)siemens_psirt

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)cisa_csaf_ot

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)cisa_csaf_ot

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)cisa_csaf_ot

    Currently no fix is available

  • No fix availableSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)cisa_csaf_ot

    Currently no fix is available

  • No fix availableSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)cisa_csaf_ot

    Currently no fix is available

02

cvss

Technical severity, 0–10. One row per scoring source.

8.7
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Siemens ProductCERT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ABB PSIRT
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com
v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-366USCWE-366USCWE-366USCWE-366USCWE-366USCWE-416USCWE-476USCWE-826USCWE-826US
05

affected products (171)

Products and version ranges known to be affected.

showing 20 of 171
06

advisories (9)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0187Kwetsbaarheden verholpen in Siemens productenNL2025-06-10csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als RUGGEDCOM, SCALANCE, SIMATIC en Tecnomatix

  • SA26P009XZ Utils vulnerability impacting B&R Products2026-06-10csaf · abb_psirtCH

    An update is available that resolves vulnerability in the product versions listed as affected in the advisory. An attacker who successfully exploited this vulnerability could cause the product to stop or corrupt memory data.

  • SSA-082556SSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.52025-06-10csaf · siemens_psirtDE

    Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fixes and recommends specific mitigations for products where fixes are not or not yet available. SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5 is no longer maintained and there won't be any update to the CVE list anymore. Please update to the latest version. Note: This SSA advises vulnerabilities for firmware version V3.1.5 only; for version V3.1.6 refer to SSA-019113.

  • WID-SEC-W-2025-0704xz: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-04-03csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in xz ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • WID-SEC-W-2025-1439Dell Secure Connect Gateway: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2025-06-30csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Dell Secure Connect Gateway ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

  • ICSA-25-162-05Siemens SIMATIC S7-1500 CPU family2025-06-10icsa · cisa_csaf_otUS

    Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fix versions and recommends countermeasures for products where fixes are not, or not yet available.

  • ICSA-26-181-05XZ Utils vulnerability impacting B&R Products2026-06-10icsa · cisa_csaf_otUS

    An update is available that resolves vulnerability in the product versions listed as affected in the advisory. An attacker who successfully exploited this vulnerability could cause the product to stop or corrupt memory data.

  • CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
  • HSEC-2025-0003Use after free in multithreaded lzma (.xz) decoder2025-11-14vendor · osvUS

    # Use after free in multithreaded lzma (.xz) decoder In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash (CVE-2025-31115). The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the `lzma_stream_decoder_mt` function are affected. The Haskell *xz-clib* library vendors and builds the C implementation. The *xz* package does not use the multithreaded decoder and is therefore unaffected.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvabb_psirtcert_bundncsc_nlsiemens_psirtcisa_csaf_otcertfrNVDCVE.orgMITRE
published 2025-04-03modified 2026-06-17
09

references (17)

External citations — patches, advisories, analysis.

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