CRITICALCVSS v3.1 9.0Vulnerability

CVE-2026-20043

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.

Properties

Severity
CRITICAL
Nvd fetched at
2026-10-22T22:14:18.200859+00:00
Epss score
0.00264
Cvss severity
CRITICAL
Cvss score
9
Retrieved at
2026-10-22T22:17:34+00:00
Last source
FIRST EPSS
Score
9
Cvss version
3.1
Cve id
CVE-2026-20043
Cvss vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
First seen by Signal
2026-10-21T22:34:38+00:00
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published at
2026-10-21T17:18:27.087
Last modified
2026-10-22T14:17:40.043
Epss percentile
0.17335

Related Entities (1)

HAS_WEAKNESS (1)

→[Weakness]Out-of-bounds Write

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CVE-2026-20043 (CVSS v3.1 9) — Ninja Signal Threat Intelligence | Ninja Signal