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CVE-2025-11964
OOBW in utf_16le_to_utf_8_truncated() in libpcap
Low1.9EPSS 0.12%
- Published
- Updated
- Reserved
- Assigned by
- Tcpdump
Description
On Windows only, if libpcap needs to convert a Windows error message to UTF-8 and the message includes characters that UTF-8 represents using 4 bytes, utf_16le_to_utf_8_truncated() can write data beyond the end of the provided buffer.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| TcpdumpCNA (assigner) | 3.1 | Low1.9 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Low1.9 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 1.9.
Weakness
Affected products
- affected 1.10.0 – < 1.10.6
What to do
Solution: libpcap 1.10.6 includes a fix for this bug.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-11964)Record last updated .