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Vulnerability · Published May 24, 2026 · Assigned by mitre

CVE-2026-48829

High 7.5

In plain English

A high-severity null pointer dereference in GNU SASL from GNU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 60.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In GNU SASL before 2.2.3, DIGEST-MD5 has a NULL pointer dereference affecting both clients and servers, via a known token with no accompanying = character. This occurs in lib/digest-md5/getsubopt.c.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12gsasl2.2.0-1+deb12u1DEBIAN-CVE-2026-48829
Debian:13gsasl2.2.2-1.1+deb13u1DEBIAN-CVE-2026-48829
Debian:14gsasl2.2.3-1DEBIAN-CVE-2026-48829
Ubuntu:24.04:LTSgsasl2.2.1-1willsync1ubuntu0.1USN-8356-1
Ubuntu:24.04:LTSgsasl2.2.1-1willsync1ubuntu0.1UBUNTU-CVE-2026-48829
Ubuntu:25.10gsasl2.2.2-2ubuntu1.1UBUNTU-CVE-2026-48829
Ubuntu:25.10gsasl2.2.2-2ubuntu1.1USN-8356-1
Ubuntu:26.04:LTSgsasl2.2.2-4ubuntu1.1UBUNTU-CVE-2026-48829
Ubuntu:26.04:LTSgsasl2.2.2-4ubuntu1.1USN-8356-1

Affected products (as reported)

VendorProductVersions
GNU GNU SASL 0 – before 2.2.3

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References