CVE-2025-56005

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total 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

17.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.8% 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 2026-08-24.

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

2026-01-20 00:00Z7 MO AGO

Last updated

2026-09-01 12:04Z3 DAYS AGO

Reserved

2025-08-16

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.2

Document digest

e3e3fb19f4740718dab854283e1eaaf600dc60aff9942d5aac1592e729b90c00

• github.comhttps://github.com/bohmiiidd/Undocumented-RCE-in-PLY
• github.comhttps://github.com/tom025/ply_exploit_rejection
• github.comhttps://github.com/bohmiiidd/Undocumument_RCE_PLY-yacc-CVE-2025-56005
• github.comhttps://github.com/tom025/ply_exploit_rejection/issues/1
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/23/4
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/23/5
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/28/5
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/29/1
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/29/2
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/01/30/1
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2025-56005vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2431308https://bugzilla.redhat.com/show_bug.cgi?id=2431308issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-56005.jsonx_sadp-csaf-vex