CVE-2026-9669

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 35.6% of scored records. A rank, not a probability.

NVD base score

8.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-13.

Red Hat severity

Moderate. 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

2026-06-08 22:01Z2 MO AGO

Last updated

2026-08-13 00:26Z22 DAYS AGO

Reserved

2026-05-27

Assigning CNA

PSF

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

41047d43d3f3153cbc5c0b58caa8313d3437242d315775c48feb73a8ac5248bb

• github.comhttps://github.com/python/cpython/pull/150600patch
• mail.python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/DBJZETMGUIFK7DVUWMOXHD3Z6IX2QPSX/vendor-advisory
• github.comhttps://github.com/python/cpython/issues/150599issue-tracking
• github.comhttps://github.com/python/cpython/commit/157a5df8cb5d82b33f918a7489e72ce95ceb12b6patch
• github.comhttps://github.com/python/cpython/commit/5755d0f083949ff3c5bf3a37e673e24e306b036epatch
• github.comhttps://github.com/python/cpython/commit/619a12b2e545391dc436b3af79dda22337382a6fpatch
• github.comhttps://github.com/python/cpython/commit/d3ca26983dfbccdf609f24ff5877dc3118e4702dpatch
• github.comhttps://github.com/python/cpython/commit/938ec030e90c5e53f1faac6fab1643f14e4f4a79patch
• github.comhttps://github.com/python/cpython/commit/991e6cf86496718c4ef00b362d640e00cb5c85b2patch
• github.comhttps://github.com/python/cpython/commit/1ba6135eae75ad8413413caeeedb56ae72320636patch
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/06/08/17