CVE-2012-6125

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-04-23. 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: 2%CVSS: 9.8Exploit: None knownExposed: 0

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

Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
76%
KEV
Not listed

Published

October 31, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 15, 2026
No patch confirmed yet.
generic

CVE-2012-6125

https://security-tracker.debian.org/tracker/CVE-2012-6125
generic

[Chicken-hackers] [PATCH] Proper fix for hash collision attack [Was: Re:

https://lists.nongnu.org/archive/html/chicken-hackers/2012-01/msg00020.html
generic

Re: [Chicken-hackers] On Hash Collisions (28C3)

https://lists.nongnu.org/archive/html/chicken-hackers/2012-01/msg00002.html
generic

oss-security - Re: A small backlog of vulnerabilities in Chicken Scheme

http://www.openwall.com/lists/oss-security/2013/02/08/2
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/cve-2012-6125

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chicken—4.8.0-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chicken—4.8.0-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chicken—4.8.0-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chicken—4.8.0-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 20× 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 109 total refreshes for this CVE.

  1. 2026-08-21 23:44 UTCEPSS rescore
  2. 2026-08-21 11:14 UTCOSV refresh
  3. 2026-08-20 22:50 UTCEPSS rescore
  4. 2026-08-19 16:59 UTCEPSS rescore
  5. 2026-08-18 13:42 UTCEPSS rescore
  6. 2026-08-16 02:09 UTCEPSS rescore
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  11. 2026-08-07 16:21 UTCEPSS rescore
  12. 2026-08-06 13:42 UTCEPSS rescore
  13. 2026-08-05 23:24 UTCOSV refresh
  14. 2026-08-05 19:12 UTCEPSS rescore
  15. 2026-08-04 15:04 UTCEPSS rescore
  16. 2026-08-02 02:22 UTCEPSS rescore
  17. 2026-07-30 01:26 UTCEPSS rescore
  18. 2026-07-28 15:31 UTCEPSS rescore
  19. 2026-07-25 14:12 UTCEPSS rescore
  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:08 UTCEG score recompute
  22. 2026-07-23 00:12 UTCEG score recompute
  23. 2026-07-22 21:50 UTCEG score recompute
  24. 2026-07-22 14:04 UTCEPSS rescore
  25. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-21 15:21 UTCEPSS rescore
  2. 2026-07-20 17:03 UTCEPSS rescore
  3. 2026-07-20 17:03 UTCEPSS rescore
  4. 2026-07-20 03:10 UTCOSV refresh
  5. 2026-07-19 14:27 UTCEPSS rescore
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  7. 2026-07-19 02:25 UTCEPSS rescore
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  9. 2026-07-18 10:00 UTCEPSS rescore
  10. 2026-07-16 16:58 UTCEPSS rescore
  11. 2026-07-15 16:54 UTCEPSS rescore
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  17. 2026-07-09 19:05 UTCEPSS rescore
  18. 2026-07-08 15:10 UTCEPSS rescore
  19. 2026-07-06 02:19 UTCEPSS rescore
  20. 2026-07-06 02:19 UTCEPSS rescore
  21. 2026-07-05 02:26 UTCEPSS rescore
  22. 2026-07-04 06:27 UTCEPSS rescore
  23. 2026-07-02 17:56 UTCOSV refresh
  24. 2026-07-01 15:02 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
  26. 2026-06-30 23:19 UTCEPSS rescore
  27. 2026-06-28 14:03 UTCEPSS rescore
  28. 2026-06-28 04:53 UTCEPSS rescore
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  30. 2026-06-27 03:05 UTCEPSS rescore
  31. 2026-06-25 13:46 UTCEPSS rescore
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  37. 2026-06-21 14:53 UTCEPSS rescore
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  40. 2026-06-19 19:23 UTCEPSS rescore
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  42. 2026-06-18 17:49 UTCEPSS rescore
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  44. 2026-06-17 17:49 UTCEPSS rescore
  45. 2026-06-17 17:49 UTCEPSS rescore
  46. 2026-06-16 17:49 UTCEPSS rescore
  47. 2026-06-16 17:49 UTCEPSS rescore
  48. 2026-06-15 17:44 UTCEPSS rescore
  49. 2026-06-14 23:14 UTCEPSS rescore
  50. 2026-06-14 15:43 UTCOSV refresh
  51. 2026-06-13 22:57 UTCEPSS rescore
  52. 2026-06-12 23:08 UTCEPSS rescore
  53. 2026-06-11 13:56 UTCEPSS rescore
  54. 2026-06-10 13:18 UTCEPSS rescore
  55. 2026-06-08 14:14 UTCEPSS rescore
  56. 2026-06-07 15:22 UTCEPSS rescore
  57. 2026-06-06 13:45 UTCEPSS rescore
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  59. 2026-06-05 22:44 UTCEPSS rescore
  60. 2026-06-05 22:44 UTCEPSS rescore
  61. 2026-06-05 06:08 UTCEPSS rescore
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  63. 2026-06-02 20:10 UTCEPSS rescore
  64. 2026-06-02 20:10 UTCEPSS rescore
  65. 2026-06-01 13:49 UTCEPSS rescore
  66. 2026-06-01 13:49 UTCEPSS rescore
  67. 2026-05-31 22:28 UTCEPSS rescore
  68. 2026-05-31 22:28 UTCEPSS rescore
  69. 2026-05-31 00:14 UTCEPSS rescore
  70. 2026-05-31 00:14 UTCEPSS rescore
  71. 2026-05-29 13:41 UTCEPSS rescore
  72. 2026-05-29 13:41 UTCEPSS rescore
  73. 2026-05-28 13:42 UTCEPSS rescore
  74. 2026-05-28 13:42 UTCEPSS rescore
  75. 2026-05-28 13:42 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2012-6125?
CVE-2012-6125 is a critical vulnerability published on October 31, 2019. Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.
When was CVE-2012-6125 disclosed?
CVE-2012-6125 was first published in the National Vulnerability Database on October 31, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-6125 actively exploited?
CVE-2012-6125 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 23.7% of all scored CVEs.
What is the CVSS score of CVE-2012-6125?
CVE-2012-6125 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2012-6125?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-6125, 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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