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CVE-2025-11961

15
FAUCET Score

CVE-2025-11961 is a low-severity vulnerability in the libpcap library's pcap_ether_aton() function. This flaw allows an application to read or write data beyond allocated buffer boundaries if it provides a malformed MAC-48 address string, though no specific affected products are listed. The attack requires high privileges and high attack complexity, with a minimal impact of only a potential integrity loss. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
The Tcpdump GroupLibpcap
>= 0, < 1.10.6CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

1.9LOW

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
0.5
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.10%
Probability of exploitation in next 30 days
EPSS Percentile
0.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0010 is in the 14th percentile among its peer group of 67 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (15)

microsoftpatch availablevia msrc
Product: cbl2 libpcap 1.10.1-5 on CBL Mariner 2.0Fixed in: 1.10.1-5
microsoftpatch availablevia msrc
Product: 20944-17086Fixed in: 1.10.1-5
microsoftpatch availablevia msrc
Product: azl3 nmap 7.95-3 on Azure Linux 3.0Fixed in: 7.95-3
microsoftpatch availablevia msrc
Product: cbl2 nmap 7.93-4 on CBL Mariner 2.0Fixed in: 7.93-4
microsoftpatch availablevia msrc
Product: azl3 libpcap 1.10.5-1 on Azure Linux 3.0Fixed in: 1.10.6-1
microsoftpatch availablevia msrc
Product: cbl2 libpcap 1.10.1-4 on CBL Mariner 2.0Fixed in: 1.10.1-5
microsoftpatch availablevia msrc
Product: 20881-17084Fixed in: 7.95-3
microsoftpatch availablevia msrc
Product: 20882-17086Fixed in: 7.93-4
microsoftpatch availablevia msrc
Product: 17643-17084Fixed in: 1.10.6-1
microsoftpatch availablevia msrc
Product: 20213-17086Fixed in: 1.10.1-5
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libpcap
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libpcap
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libpcap
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: rhcos
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: libpcap

Vendor Advisories (2)

redhatCVE-2025-11961Low

libpcap: libpcap: Memory corruption via malformed MAC-48 address input

Dec 31, 2025
microsoft2025-Dec/CVE-2025-11961Low

OOBR and OOBW in pcap_ether_aton() in libpcap

Dec 9, 2025

References

github.com / the-tcpdump-group/libpcap/commit/b2d2f9a9a0581c40780bde509f7cc715920f1c02