CVE-2026-24401

mediumpriority · track · 26EPSS 0.004 · 31 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.37% (31st) EPSS
CVSS 6.5 · medium
Is it mine?
16 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524, which is part of version 0.9-rc3.

01

remediations

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

A vendor fix is available.

  • Fixedavahi-0:0.7-150100.3.49.1.aarch64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedavahi-0:0.7-150100.3.49.1.s390x as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedavahi-0:0.7-150100.3.49.1.x86_64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-client3-0:0.7-150100.3.49.1.aarch64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-client3-0:0.7-150100.3.49.1.s390x as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-client3-0:0.7-150100.3.49.1.x86_64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-common3-0:0.7-150100.3.49.1.aarch64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-common3-0:0.7-150100.3.49.1.s390x as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-common3-0:0.7-150100.3.49.1.x86_64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-core7-0:0.7-150100.3.49.1.aarch64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-core7-0:0.7-150100.3.49.1.s390x as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixedlibavahi-core7-0:0.7-150100.3.49.1.x86_64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

02

cvss

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

6.5
010

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

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6
v3.16.5mediumAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 2.8 · impact 3.6
v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · SUSE Product Security
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-674USCWE-674US
05

affected products (16)

Products and version ranges known to be affected.

06

advisories (2)

Vendor and ecosystem advisories describing this.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundnvdsuse_csafNVDCVE.orgMITRE
published 2026-01-24modified 2026-10-23
09

references (9)

External citations — patches, advisories, analysis.

scry

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