5.6

CVE-2025-5745: gnu glibc Improper Initialization

CVSS: 5.6v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-5745DEBIAN-CVE-2025-5745CGA-749f-c43j-7c78
Published 05-06-2025Last modified 05-06-2025
Open JSON

Vulnerability summary

CVE-2025-5745 is a medium (CVSS 5.6) Improper Initialization vulnerability in gnu glibc. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.6/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2025:15222-1USN-7634-1CGA-RXF5-4QF7-5JPG

Timeline

  1. 05-06-2025
    PublishedVulnerability first disclosed.
  2. 05-06-2025
    Last modifiedVulnerability information updated.

Description

The strncmp implementation optimized for the Power10 processor in the GNU C Library version 2.40 and later writes to vector registers v20 to v31 without saving contents from the caller (those registers are defined as non-volatile registers by the powerpc64le ABI), resulting in overwriting of its contents and potentially altering control flow of the caller, or leaking the input strings to the function to other parts of the program.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • glibcAll versions (No fix recorded)
Debian1 product
  • glibc< 2.41-9
Gnu1 product
  • glibc≥ 2.40, < 2.40-136 | ≥ 2.41, < 2.41-57
The gnu c library1 product
Ubuntu1 product
  • glibc< 2.41-6ubuntu1.1
Wolfi1 product
  • glibcAll versions (No fix recorded)

6 vendors · 6 products

References

6 links