CVE-2025-54574

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

23.96% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 97.8% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-08-01 18:02Z1 YR AGO

Last updated

2025-11-05 17:04Z11 MO AGO

Reserved

2025-07-25

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

b1b3bebe2e3dcf01452da72f5850743077a347f9258858a7da81a4ed04cdd9db

• github.comhttps://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3x_refsource_CONFIRM
• github.comhttps://github.com/squid-cache/squid/commit/a27bf4b84da23594150c7a86a23435df0b35b988x_refsource_MISC
• github.comhttps://github.com/squid-cache/squid/releases/tag/SQUID_6_4x_refsource_MISC
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/09/msg00027.html
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/11/05/5