CVE-2026-85091

HighCVSS 7.4/10Last modified Sep 9, 2026

Description

zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations with stale external buffer pointers. Attackers can trigger the overflow by calling gzprintf() or gzvprintf() after a write stall, causing an unchecked memmove() to write beyond the internal input buffer boundary.

Metrics

CVSS 3.1 7.4/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Sep 3, 2026
Last modified: Sep 9, 2026
NVD status: Awaiting Analysis

Related CVEs from 2026

CVE-2026-850926.6LiME through 1.12.0 fails to validate the disk acquisition output path and does not use O_NOFOLLOW when opening the operator-supplied path p CVE-2026-850936.5Cheshire Cat AI's GET /memory/collections/{collection_id}/points endpoint fails to apply per-user filtering when retrieving episodic memory CVE-2026-850948.8The Canva Android App before 2.376.0 did not restrict the headers returned to an external origin running in a privileged WebView. A threat CVE-2026-850979.8The Bricksforge plugin for WordPress is vulnerable to unauthenticated arbitrary file upload in versions up to, and including, 3.1.8.9. This CVE-2026-85107.5Integer overflow in Skia in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer proc CVE-2026-851004.3A vulnerability was detected in 2FastLabs agent-squad up to 1.1.4. Affected by this vulnerability is the function AgentSquad.routeRequest of CVE-2026-851029.8Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote att CVE-2026-851039.8A heap-based buffer overflow in VPN certificate ASN.1 decoding may allow an unauthenticated remote attacker to execute arbitrary code on Che CVE-2026-851045.3In Sooma 2GEN brain stimulator, an attacker within Bluetooth range can make unauthenticated changes to brain stimulation parameters.CVE-2026-851057.3A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is the function _sess_nowait of the file s71.py of the com CVE-2026-851066.3A vulnerability has been found in NousResearch hermes-agent 0.18.0. This affects the function fetchLinkTitle of the file apps/desktop/src/ap CVE-2026-851074.3A vulnerability was found in NousResearch hermes-agent 0.18.0. This vulnerability affects the function resourceBufferFromUrl of the file app