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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

October 20, 2017

Last Modified

June 16, 2026

Advisory Details (4)

Auto-updated Sep 2, 2026
Patch available.
generic

oss-security - Re: CVE requests: ffmpeg/widelands/jifty::db/lilo/libpcap

http://www.openwall.com/lists/oss-security/2011/05/19/11
generic

CVE-2011-1935

https://security-tracker.debian.org/tracker/CVE-2011-1935/
generic Patch Available

#623868 - snapshot length corruption on live captures - Debian Bug report logs

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623868
generic

oss-security - Fwd: Old CVE ids, public, but still "RESERVED"

http://www.openwall.com/lists/oss-security/2014/02/08/5

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libpcap—1.1.1-4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libpcap—1.1.1-4—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libpcap—1.1.1-4—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libpcap—1.1.1-4—

Data Freshness Timeline

(refreshed 3× in last 7d / 10× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 132 total refreshes for this CVE.

  1. 2026-09-06 13:41 UTCEPSS rescore
  2. 2026-09-05 15:22 UTCEPSS rescore
  3. 2026-09-04 13:55 UTCEPSS rescore
  4. 2026-08-26 19:33 UTCOSV refresh
  5. 2026-08-25 13:43 UTCEPSS rescore
  6. 2026-08-19 16:58 UTCEPSS rescore
  7. 2026-08-18 13:42 UTCEPSS rescore
  8. 2026-08-15 01:25 UTCEPSS rescore
  9. 2026-08-10 10:09 UTCOSV refresh
  10. 2026-08-09 13:41 UTCEPSS rescore
  11. 2026-08-08 16:31 UTCEPSS rescore
  12. 2026-08-06 13:41 UTCEPSS rescore
  13. 2026-08-05 19:12 UTCEPSS rescore
  14. 2026-08-04 15:04 UTCEPSS rescore
  15. 2026-08-01 04:10 UTCEPSS rescore
  16. 2026-07-30 01:26 UTCEPSS rescore
  17. 2026-07-25 10:41 UTCOSV refresh
  18. 2026-07-23 14:14 UTCEPSS rescore
  19. 2026-07-23 01:05 UTCEG score recompute
  20. 2026-07-23 00:08 UTCEG score recompute
  21. 2026-07-22 21:47 UTCEG score recompute
  22. 2026-07-22 14:03 UTCEPSS rescore
  23. 2026-07-21 15:21 UTCEPSS rescore
  24. 2026-07-20 17:03 UTCEPSS rescore
  25. 2026-07-20 17:03 UTCEPSS rescore
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  1. 2026-07-19 02:25 UTCEPSS rescore
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  3. 2026-07-18 10:00 UTCEPSS rescore
  4. 2026-07-16 16:58 UTCEPSS rescore
  5. 2026-07-15 16:54 UTCEPSS rescore
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  7. 2026-07-15 01:55 UTCEPSS rescore
  8. 2026-07-13 22:25 UTCEPSS rescore
  9. 2026-07-13 06:08 UTCEPSS rescore
  10. 2026-07-11 08:22 UTCEPSS rescore
  11. 2026-07-11 08:22 UTCEPSS rescore
  12. 2026-07-08 15:10 UTCEPSS rescore
  13. 2026-07-08 15:10 UTCEPSS rescore
  14. 2026-07-08 05:05 UTCOSV refresh
  15. 2026-07-06 16:23 UTCEPSS rescore
  16. 2026-07-06 02:19 UTCEPSS rescore
  17. 2026-07-06 02:19 UTCEPSS rescore
  18. 2026-07-05 02:26 UTCEPSS rescore
  19. 2026-07-04 06:27 UTCEPSS rescore
  20. 2026-07-02 14:01 UTCEPSS rescore
  21. 2026-07-01 15:02 UTCEPSS rescore
  22. 2026-07-01 15:02 UTCEPSS rescore
  23. 2026-06-30 23:19 UTCEPSS rescore
  24. 2026-06-30 23:19 UTCEPSS rescore
  25. 2026-06-29 14:02 UTCEPSS rescore
  26. 2026-06-28 14:03 UTCEPSS rescore
  27. 2026-06-28 04:53 UTCEPSS rescore
  28. 2026-06-28 04:52 UTCEPSS rescore
  29. 2026-06-27 03:05 UTCEPSS rescore
  30. 2026-06-27 03:05 UTCEPSS rescore
  31. 2026-06-25 13:46 UTCEPSS rescore
  32. 2026-06-24 14:02 UTCEPSS rescore
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  34. 2026-06-23 21:30 UTCEPSS rescore
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  36. 2026-06-22 14:22 UTCEPSS rescore
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  38. 2026-06-21 01:56 UTCEPSS rescore
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  40. 2026-06-19 19:22 UTCEPSS rescore
  41. 2026-06-19 19:22 UTCEPSS rescore
  42. 2026-06-19 16:55 UTCOSV refresh
  43. 2026-06-18 17:49 UTCEPSS rescore
  44. 2026-06-18 17:49 UTCEPSS rescore
  45. 2026-06-17 17:49 UTCEPSS rescore
  46. 2026-06-17 17:49 UTCEPSS rescore
  47. 2026-06-17 17:49 UTCEPSS rescore
  48. 2026-06-16 17:49 UTCEPSS rescore
  49. 2026-06-15 17:44 UTCEPSS rescore
  50. 2026-06-14 23:14 UTCEPSS rescore
  51. 2026-06-14 23:14 UTCEPSS rescore
  52. 2026-06-13 22:57 UTCEPSS rescore
  53. 2026-06-13 22:57 UTCEPSS rescore
  54. 2026-06-12 23:08 UTCEPSS rescore
  55. 2026-06-11 13:56 UTCEPSS rescore
  56. 2026-06-10 22:14 UTCEPSS rescore
  57. 2026-06-10 13:17 UTCEPSS rescore
  58. 2026-06-08 14:14 UTCEPSS rescore
  59. 2026-06-08 14:14 UTCEPSS rescore
  60. 2026-06-07 15:22 UTCEPSS rescore
  61. 2026-06-07 15:22 UTCEPSS rescore
  62. 2026-06-06 13:45 UTCEPSS rescore
  63. 2026-06-06 13:44 UTCEPSS rescore
  64. 2026-06-05 22:44 UTCEPSS rescore
  65. 2026-06-05 06:08 UTCEPSS rescore
  66. 2026-06-05 06:07 UTCEPSS rescore
  67. 2026-06-04 13:09 UTCEPSS rescore
  68. 2026-06-04 13:09 UTCEPSS rescore
  69. 2026-06-02 20:10 UTCEPSS rescore
  70. 2026-06-02 20:10 UTCEPSS rescore
  71. 2026-06-01 13:49 UTCEPSS rescore
  72. 2026-06-01 13:49 UTCEPSS rescore
  73. 2026-05-31 22:28 UTCEPSS rescore
  74. 2026-05-31 22:28 UTCEPSS rescore
  75. 2026-05-31 00:14 UTCEPSS rescore

Frequently 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 June 16, 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 4% probability of exploitation in the next 30 days, which ranks it in the top 11.1% of all scored CVEs.
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.

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