CVE-2025-11964

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Source
https://cve.org/CVERecord?id=CVE-2025-11964
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-11964.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-11964
Downstream
Published
2025-12-31T00:58:19Z
Modified
2026-08-12T14:52:30Z
Severity
  • 1.9 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
OOBW in utf_16le_to_utf_8_truncated() in libpcap
Details

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.

Database specific 
{
    "cna_assigner":  "Tcpdump",
    "cwe_ids":  [
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/11xxx/CVE-2025-11964.json"
}
References

Affected packages

Git / github.com/the-tcpdump-group/libpcap

Affected ranges

Type
GIT
Repo
https://github.com/the-tcpdump-group/libpcap
Events
Introduced
ef0762f2f880d5b176d4f6146c567e2a6dd44637
Fixed
7fabf607f2319a36a0bd78444247180acb838e69
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "1.10.0"
        },
        {
            "fixed":  "1.10.6"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

libpcap-1.*
libpcap-1.10.0
libpcap-1.10.1
libpcap-1.10.2
libpcap-1.10.3
libpcap-1.10.4
libpcap-1.10.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-11964.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "105413501093099000177504737593665485571",
                "238539772435896871749861325614534390535",
                "308634017951984110653427438898181624682",
                "286765428450918210346252275733749370223"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-11964-0556082a",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/the-tcpdump-group/libpcap/commit/7fabf607f2319a36a0bd78444247180acb838e69",
        "target":  {
            "file":  "fmtutils.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "48150353148794074420133864590076316976",
            "length":  1239
        },
        "id":  "CVE-2025-11964-c57b6e8f",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/the-tcpdump-group/libpcap/commit/7fabf607f2319a36a0bd78444247180acb838e69",
        "target":  {
            "file":  "fmtutils.c",
            "function":  "utf_16le_to_utf_8_truncated"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T14:52:30Z"