CVE-2026-0256

mediumpriority · track · 19EPSS 0.002 · 6 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.16% (6th) EPSS

CVSS 4.8 · medium

Is it mine?

87 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not impacted by this vulnerability.

remediations

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

A vendor fix is available.

FixedRUGGEDCOM APE1808siemens_psirt
Upgrade Palo Alto Networks Virtual NGFW V11.2.10-h6. Contact customer support to receive patch and update information
FixedRUGGEDCOM APE1808cisa_csaf_ot
Contact customer support to receive patch and update information

cvss

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

5.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 1.7 · impact 2.7

v3.15.2mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:Nsecondary · CISA US

v3.15.2mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:Nsecondary · Siemens ProductCERT DE

v3.15.2mediumAV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU

v4.04.4mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Ambersecondary · ENISA EU

v4.04.4mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:N/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:N/R:U/V:D/RE:M/U:Ambersecondary · psirt@paloaltonetworks.com

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USCWE-79USCWE-79USCWE-79US

affected products (87)

Products and version ranges known to be affected.

Palo Alto Networks PAN-OS <10.2.10-h36all versionscert_bundDE
Palo Alto Networks PAN-OS <10.2.16-h7all versionscert_bundDE
Palo Alto Networks PAN-OS <10.2.18-h6all versionscert_bundDE
Palo Alto Networks PAN-OS <10.2.7-h34all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.10-h25all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.13-h5all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.15all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.4-h33all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.6-h32all versionscert_bundDE
Palo Alto Networks PAN-OS <11.1.7-h6all versionscert_bundDE
Palo Alto Networks PAN-OS <11.2.10-h6all versionscert_bundDE
Palo Alto Networks PAN-OS <11.2.12all versionscert_bundDE
Palo Alto Networks PAN-OS <11.2.4-h17all versionscert_bundDE
Palo Alto Networks PAN-OS <11.2.7-h13all versionscert_bundDE
Palo Alto Networks PAN-OS <12.1.4-h5all versionscert_bundDE
Palo Alto Networks PAN-OS <12.1.7all versionscert_bundDE
Palo Alto Networks PAN-OS< 10.2.10-h36cert_bundDE
Palo Alto Networks PAN-OS< 10.2.16-h7cert_bundDE
Palo Alto Networks PAN-OS< 10.2.18-h6cert_bundDE
Palo Alto Networks PAN-OS< 10.2.7-h34cert_bundDE

showing 20 of 87

advisories (3)

Vendor and ecosystem advisories describing this.

SSA-967325SSA-967325: Multiple Vulnerabilities in Palo Alto Networks PAN-OS before V11.2.10-h7 on RUGGEDCOM APE1808 Devices2026-05-12csaf · siemens_psirtDE
Palo Alto Networks has published [1] information on vulnerabilities in PAN-OS. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version. Customers are advised to consult and implement the workarounds provided in Palo Alto Networks' upstream security notifications. [1] https://security.paloaltonetworks.com/
WID-SEC-W-2026-1528Palo Alto Networks PAN-OS: Mehrere SchwachstellenDeutsch2026-05-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Palo Alto Networks PAN-OS ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.
ICSA-26-139-02Siemens RUGGEDCOM APE1808 Devices2026-05-12icsa · cisa_csaf_otUS
Palo Alto Networks has published [1] information on vulnerabilities in PAN-OS. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens is preparing fix versions and recommends countermeasures for products where fixes are not, or not yet available. Customers are advised to consult and implement the workarounds provided in Palo Alto Networks' upstream security notifications. [1] https://security.paloaltonetworks.com/

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund siemens_psirt cisa_csaf_ot NVD CVE.org MITRE

published 2026-05-13modified 2026-10-26

references (5)

External citations — patches, advisories, analysis.

scry

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