CVE-2026-85498
lowA flaw was found in polkit.
A flaw was found in polkit. When processing input that begins with a null byte, an arithmetic error in the authentication agent helper causes an integer underflow during buffer length calculation, resulting in an out-of-bounds memory read. An attacker capable of supplying crafted input can trigger this flaw, potentially causing an application crash and resulting in a Denial of Service (DoS).
CVSS
3.5
3.5 (CVSS v3.1)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-10-29 09:17
Modified: 2026-10-29 13:17
NVD status: Awaiting Analysis
Last synced 6 hours ago
Verified against the source API 2026-10-29 13:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:66287 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-85498 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2528347 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 13:34 UTC · record ↗