PT-2026-35713 · Glibc · Glibc

Shinobu · Published 2026-04-28 · Updated 2026-06-05 · CVE-2026-5435

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions glibc versions 2.2 and newer

Description The deprecated functions ns printrrf(), ns printrr(), and fp nquery() fail to enforce the caller-supplied buffer length. This can lead to an out-of-bounds write, which occurs when data is written outside the boundaries of a pre-allocated fixed-length block of memory, specifically when printing TSIG records.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-5435

ECHO-53D2-A97B-142D

RHSA-2026:12740

Affected Products

Glibc

References · 14

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5435 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5435 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5435 · Security Note
• https://ubuntu.com/security/CVE-2026-5435 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-5435 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-5435 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2026-5435 · Vendor Advisory
• https://twitter.com/the_yellow_fall/status/2049494663573499965 · Twitter Post
• https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0011 · Note
• https://twitter.com/oss_security/status/2049319744709255273 · Twitter Post
• https://sourceware.org/bugzilla/show_bug.cgi?id=34033 · Note
• https://inbox.sourceware.org/libc-announce/[e-mail]/T/#u · Note
• https://inbox.sourceware.org/libc-alpha/[e-mail] · Note
• https://t.me/cveNotify/162218 · Telegram Post