CVE-2012-1109

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0

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

mwlib 0.13 through 0.13.4 has a denial of service vulnerability when parsing #iferror magic functions

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
79.3%
KEV
Not listed

Published

November 12, 2019

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 40× 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.

  1. 2026-07-11 08:22 UTCEPSS rescore
  2. 2026-07-09 19:05 UTCEPSS rescore
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  18. 2026-06-25 13:46 UTCEPSS rescore
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  20. 2026-06-24 14:02 UTCEPSS rescore
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  22. 2026-06-23 21:30 UTCEPSS rescore
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  1. 2026-06-21 01:56 UTCEPSS rescore
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  3. 2026-06-19 19:22 UTCEPSS rescore
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  5. 2026-06-18 17:49 UTCEPSS rescore
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  17. 2026-06-10 22:14 UTCEPSS rescore
  18. 2026-06-10 13:18 UTCEPSS rescore
  19. 2026-06-08 14:14 UTCEPSS rescore
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  21. 2026-06-07 15:22 UTCEPSS rescore
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  23. 2026-06-06 13:45 UTCEPSS rescore
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  25. 2026-06-05 22:44 UTCEPSS rescore
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  27. 2026-06-05 06:08 UTCEPSS rescore
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  30. 2026-06-02 20:10 UTCEPSS rescore
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  37. 2026-05-29 13:41 UTCEPSS rescore
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  40. 2026-05-27 13:38 UTCEPSS rescore
  41. 2026-05-27 13:38 UTCEPSS rescore
  42. 2026-05-27 11:58 UTCEG score recompute
  43. 2026-05-27 11:58 UTCGHSA enrichment
  44. 2026-05-26 13:41 UTCEPSS rescore
  45. 2026-05-26 13:41 UTCEPSS rescore
  46. 2026-05-26 07:16 UTCEPSS rescore
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  48. 2026-05-26 07:16 UTCEPSS rescore
  49. 2026-05-24 16:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2012-1109?
CVE-2012-1109 is a high vulnerability published on November 12, 2019. mwlib 0.13 through 0.13.4 has a denial of service vulnerability when parsing #iferror magic functions
When was CVE-2012-1109 disclosed?
CVE-2012-1109 was first published in the National Vulnerability Database on November 12, 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-2012-1109 actively exploited?
CVE-2012-1109 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2012-1109?
CVE-2012-1109 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2012-1109?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-1109, 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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