CVE-2026-76524

Read full description

A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user. This vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.

CVSS 7.8 (HIGH)

Attention and evidence

HYPE SCORE

0.8/10

REALITY · THREAT PRIORITY

2.7/10

General review priority; not probability

Evidence confidence: Insufficient evidence

Why this priority?

Technical severity: CVSS 7.8: +2.73
Fresh EPSS: 0.18%: +0.00

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 4 documents and public datasets.

Hype components

Headline sample (25%)

10/100

Press, 30 days (60%)

10/100

Grounded branding (15%)

0/100

HYPE TOTAL8/100

Sources and documents

Cisco Security Advisory

Technical advisory · 21 Oct 2026, 16:09 · Cisco Advance Notification for Publication of October 21, 2026, Security Advisories

Cisco Security Advisory

Press · 21 Oct 2026, 16:09 · Cisco Advance Notification for Publication of October 21, 2026, Security Advisories

Cisco Security Advisory

Technical advisory · 21 Oct 2026, 16:00 · Open Source Snort 3 Control Channel Socket Arbitrary Command Execution Vulnerability

Cisco Security Advisory

Press · 21 Oct 2026, 16:00 · Open Source Snort 3 Control Channel Socket Arbitrary Command Execution Vulnerability

Score evolution

● Hype ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.8 · reality 2.7 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs. Published 15 days ago. Exploitation evidence usually takes weeks to show up: a low reality score can mean there is no data yet, not that the flaw is mild.

Evidence in context

Confidence in exploitation evidence: Insufficient evidence
Priority basis: Exploitation in attacks unconfirmed; CVSS 7.8; EPSS 0.2%
Attention, last 30 days: 2 distinct story titles; 2 press documents; 1 publisher domains.
Technical potential: local access, low privileges, no user interaction.
Observed activity: No exploitation observation is recorded.
Known scale: Not quantified.
Evidence confidence basis: Insufficient evidence

Score evaluated: 2026-11-05 14:00:25.177862+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

First press mention

21 Oct 2026, 16:00

Latest press mention

21 Oct 2026, 16:09

Published

21 Oct 2026, 16:18

Score calculated

05 Nov 2026, 14:00