synced 12 MIN AGO
01 Record

CVE-2026-8674

Assertion failure in the DNS stub resolver with a long search domain

MediumPUBLISHEDCNA: glibc
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Assertion failure in the DNS stub resolver with a long search domain

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.31% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 24.1% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-09-18.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-17 16:54Z1 MO AGO
Last updated
2026-09-17 18:09Z1 MO AGO
Reserved
2026-05-15
Assigning CNA
glibc
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
Data version
5.2
Document digest
874c9674b69a957ae35cbc90c71d6c9d321e14a5a450edd16f8bfe2e9a6d87a9

05 Affected products

VendorProductVersionsPlatforms
The GNU C Libraryglibc2.26 to 2.44—

06 References

07 Fixed in

AlmaLinux 10

  • glibc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-all-langpacks
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-benchtests
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-common
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-devel
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-doc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-gconv-extra
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-aa
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-af
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-agr
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ak
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-am
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-an
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-anp
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ar
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-as
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ast
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ayc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-az
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-be
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bem
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ber
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bg
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bhb
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bho
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bi
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bo
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-br
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-brx
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bs
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-byn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ca
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ce
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-chr
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ckb
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-cmn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-crh
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-cs
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-csb
    Fixed in 2.39-145.el10_2.alma.1

181 further packages in AlmaLinux 10 not shown (first 40 listed).

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • glibc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-all-langpacks
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-benchtests
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-common
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-devel
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-doc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-gconv-extra
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-aa
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-af
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-agr
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ak
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-am
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-an
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-anp
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ar
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-as
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ast
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ayc
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-az
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-be
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bem
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ber
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bg
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bhb
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bho
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bi
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bo
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-br
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-brx
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-bs
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-byn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ca
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ce
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-chr
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-ckb
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-cmn
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-crh
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-cs
    Fixed in 2.39-145.el10_2.alma.1
  • glibc-langpack-csb
    Fixed in 2.39-145.el10_2.alma.1

181 further packages in CloudLinux 10 not shown (first 40 listed).

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • glibc
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • glibc
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • glibc
    Fixed in 2.43-6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • eglibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • glibc
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.