CVE-2025-11964
OOBW in utf_16le_to_utf_8_truncated() in libpcap
LOW
1.9
CVSS Score
Published: December 31, 2025 at 12:58 AM UTC
Updated: June 17, 2026 at 08:31 AM UTC
1 product affected across 1 vendorLibpcap
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Severity
LOW1.9
Exploit prediction
EPSS 0.1%
SSVC
No known exploit
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
1.9LOWTcpdump
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusDEFERRED
CWE
CWE-787
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