pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via crafted packets.
CVE-2011-1935
CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 88.2%
- KEV
- Not listed
Published
October 20, 2017
Last Modified
May 13, 2026
Advisory Details (4)
Auto-updated Jun 21, 2026Patch available.
generic
oss-security - Re: CVE requests: ffmpeg/widelands/jifty::db/lilo/libpcap
http://www.openwall.com/lists/oss-security/2011/05/19/11generic Patch Available
#623868 - snapshot length corruption on live captures - Debian Bug report logs
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623868generic
oss-security - Fwd: Old CVE ids, public, but still "RESERVED"
http://www.openwall.com/lists/oss-security/2014/02/08/5Frequently asked(5)
What is CVE-2011-1935?
CVE-2011-1935 is a critical vulnerability published on October 20, 2017. pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via crafted packets.
When was CVE-2011-1935 disclosed?
CVE-2011-1935 was first published in the National Vulnerability Database on October 20, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-1935 actively exploited?
CVE-2011-1935 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-1935?
CVE-2011-1935 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2011-1935?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1935, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2011-1935
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