Buffer overflow in Git
CVE-2025-48386
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. The wincred credential helper uses a static buffer (target) as a unique key for storing and comparing against internal storage. This credential helper does not properly bounds check the available space remaining in the buffer before appending to it with wcsncat(), leading to potential buffer overflows. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.
Affected products
- Git — versions < 2.43.7, >= 2.44.0-rc0, < 2.44.4, >= 2.45.0-rc0, < 2.45.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-48386?
- CVE-2025-48386 is a medium-severity vulnerability in Git, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.3/10. Published 2025-07-08.
- How severe is CVE-2025-48386?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2025-48386 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.