CVE-2012-2751

MEDIUMCVSS v2 · 4.34.3—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.3 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:N/I:P/A:N. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 3.3% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS v2: 4.3Exploit: None knownExposed: 0

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

ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031.

CVSS v2.0 (legacy)
4.3MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.3(low)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity43% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

July 22, 2012

Last Modified

April 29, 2026

References (32)

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
modsecurity-apache—2.6.6-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
modsecurity-apache—2.6.6-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
modsecurity-apache—2.6.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
modsecurity-apache—2.6.6-1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
libapache-mod-security2.5.12-12.5.12-1+squeeze1—

Data Freshness Timeline

(refreshed 5× in last 7d / 16× 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 127 total refreshes for this CVE.

  1. 2026-08-27 14:20 UTCEPSS rescore
  2. 2026-08-26 14:40 UTCEPSS rescore
  3. 2026-08-24 05:22 UTCOSV refresh
  4. 2026-08-23 00:12 UTCEPSS rescore
  5. 2026-08-21 23:43 UTCEPSS rescore
  6. 2026-08-19 16:59 UTCEPSS rescore
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  8. 2026-08-16 02:09 UTCEPSS rescore
  9. 2026-08-15 01:25 UTCEPSS rescore
  10. 2026-08-08 16:31 UTCEPSS rescore
  11. 2026-08-08 01:56 UTCOSV refresh
  12. 2026-08-07 16:21 UTCEPSS rescore
  13. 2026-08-06 13:41 UTCEPSS rescore
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  15. 2026-08-04 15:04 UTCEPSS rescore
  16. 2026-07-30 01:26 UTCEPSS rescore
  17. 2026-07-28 15:31 UTCEPSS rescore
  18. 2026-07-26 13:45 UTCEG score recompute▲ 4.30
  19. 2026-07-25 14:12 UTCEPSS rescore
  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:07 UTCEG score recompute
  22. 2026-07-23 00:11 UTCEG score recompute
  23. 2026-07-22 21:49 UTCEG score recompute
  24. 2026-07-22 18:50 UTCOSV refresh
  25. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-22 14:04 UTCEPSS rescore
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  5. 2026-07-19 14:27 UTCEPSS rescore
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  8. 2026-07-16 16:58 UTCEPSS rescore
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  11. 2026-07-15 01:56 UTCEPSS rescore
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  20. 2026-07-05 13:59 UTCOSV refresh
  21. 2026-07-05 02:26 UTCEPSS rescore
  22. 2026-07-04 06:27 UTCEPSS rescore
  23. 2026-07-02 14:01 UTCEPSS rescore
  24. 2026-07-01 15:02 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
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  27. 2026-06-29 14:02 UTCEPSS rescore
  28. 2026-06-28 04:53 UTCEPSS rescore
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  30. 2026-06-27 03:05 UTCEPSS rescore
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  40. 2026-06-21 01:56 UTCEPSS rescore
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  42. 2026-06-19 19:22 UTCEPSS rescore
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  44. 2026-06-18 17:49 UTCEPSS rescore
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  46. 2026-06-17 17:49 UTCEPSS rescore
  47. 2026-06-17 17:49 UTCEPSS rescore
  48. 2026-06-17 01:14 UTCOSV refresh
  49. 2026-06-16 17:49 UTCEPSS rescore
  50. 2026-06-16 17:49 UTCEPSS rescore
  51. 2026-06-15 17:44 UTCEPSS rescore
  52. 2026-06-14 23:14 UTCEPSS rescore
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  54. 2026-06-13 22:57 UTCEPSS rescore
  55. 2026-06-12 23:08 UTCEPSS rescore
  56. 2026-06-11 13:56 UTCEPSS rescore
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  59. 2026-06-08 14:14 UTCEPSS rescore
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  61. 2026-06-07 15:22 UTCEPSS rescore
  62. 2026-06-07 15:22 UTCEPSS rescore
  63. 2026-06-06 13:45 UTCEPSS rescore
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  65. 2026-06-05 22:44 UTCEPSS rescore
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  67. 2026-06-05 06:08 UTCEPSS rescore
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  70. 2026-06-02 20:10 UTCEPSS rescore
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  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(4)

What is CVE-2012-2751?
CVE-2012-2751 is a medium vulnerability published on July 22, 2012. ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform…
When was CVE-2012-2751 disclosed?
CVE-2012-2751 was first published in the National Vulnerability Database on July 22, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-2751 actively exploited?
CVE-2012-2751 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 12.4% of all scored CVEs.
How do I remediate CVE-2012-2751?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-2751, 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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