CVE-2025-31115

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

0.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 48.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/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

Deferred. 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

2025-04-03 16:57Z1 YR AGO

Last updated

2026-07-14 12:41Z1 MO AGO

Reserved

2025-03-26

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

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

Weaknesses

• CWE-366Race Condition within a ThreadBase
• CWE-416Use After FreeVariant
• CWE-476NULL Pointer DereferenceBase
• CWE-826Premature Release of Resource During Expected LifetimeBase
• CWE-823Use of Out-of-range Pointer OffsetBase

Data version

5.2

Document digest

1ed3cbb503bad830d32e6a6c6a69d3f796fff9f78c061512f1128eb2b97dc796

• github.comhttps://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2x_refsource_CONFIRM
• github.comhttps://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480x_refsource_MISC
• tukaani.orghttps://tukaani.org/xz/xz-cve-2025-31115.patchx_refsource_MISC
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/04/03/1
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/04/03/2
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/04/03/3
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html