Description
The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
Published: 2026-04-28
Score: 7.3 High
EPSS: < 1% Very Low
KEV: No
Impact: Buffer overflow from TSIG printing functions
Action: Immediate Patch
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 05 May 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu glibc
CPEs cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
Vendors & Products Gnu
Gnu glibc

Wed, 29 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-120
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 28 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Tue, 28 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared The Gnu C Library
The Gnu C Library glibc
Vendors & Products The Gnu C Library
The Gnu C Library glibc

Tue, 28 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Description The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
Title Potential buffer overflow in ns_sprintrrf TSIG handling path
Weaknesses CWE-787
References

Subscriptions

Gnu Glibc
Redhat Hummingbird
The Gnu C Library Glibc
cve-icon MITRE

Status: PUBLISHED

Assigner: glibc

Published:

Updated: 2026-04-28T15:21:13.800Z

Reserved: 2026-04-02T17:18:02.654Z

Link: CVE-2026-5435

cve-icon Vulnrichment

Updated: 2026-04-28T15:21:08.263Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T13:19:22.290

Modified: 2026-05-05T17:38:37.030

Link: CVE-2026-5435

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-28T11:58:54Z

Links: CVE-2026-5435 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-29T02:30:07Z

Weaknesses