CVE-2025-11964— OOBW in utf_16le_to_utf_8_truncated() in libpcap
Quick assessment
Affected
The Tcpdump Group libpcap
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
libpcap是Tcpdump团队的一款用于网络流量捕获的便携式C/C ++库。 libpcap存在安全漏洞，该漏洞源于utf_16le_to_utf_8_truncated函数处理特定字符时存在缺陷，可能导致越界写入。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-11964
Vulnerability Information
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Vulnerability Title
OOBW in utf_16le_to_utf_8_truncated() in libpcap
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
libpcap 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libpcap是Tcpdump团队的一款用于网络流量捕获的便携式C/C ++库。 libpcap存在安全漏洞，该漏洞源于utf_16le_to_utf_8_truncated函数处理特定字符时存在缺陷，可能导致越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| The Tcpdump Group | libpcap | 1.10.0 ~ 1.10.6 | - |
|
II. Public POCs for CVE-2025-11964
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-11964 (1)
IV. Related Vulnerabilities
Same product: libpcap
-
CVE-2026-18238
OOBR in rpcap client in libpcap before 1.10.7 -
CVE-2026-18313
rpcapd memory leak in libpcap before 1.10.7 -
CVE-2026-6554
infinte loop in libpcap before 1.10.7 -
CVE-2026-6244
division by zero in libpcap before 1.10.7 -
CVE-2026-31911
abort() in libpcap before 1.10.7 on an invalid BPF opcode
Same vendor: The Tcpdump Group
-
CVE-2026-18238
OOBR in rpcap client in libpcap before 1.10.7 -
CVE-2026-18313
rpcapd memory leak in libpcap before 1.10.7 -
CVE-2026-6554
infinte loop in libpcap before 1.10.7 -
CVE-2026-6244
division by zero in libpcap before 1.10.7 -
CVE-2026-31911
abort() in libpcap before 1.10.7 on an invalid BPF opcode
Same weakness: CWE-787
-
CVE-2026-106431
One-byte heap buffer overflow in BSON bulk document writer i -
CVE-2026-14507
IBM DataPower Gateway Out-of-bounds Write -
CVE-2026-14992
IBM DataPower Gateway Out-of-bounds Write -
CVE-2026-14991
IBM DataPower Gateway Out-of-bounds Write -
CVE-2026-15784
IBM DataPower Gateway Out-of-bounds Write
V. Comments for CVE-2025-11964
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