CVE-2011-4881

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 8%CVSS: —Exploit: NoneExposed: 0

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

The web server in Certec atvise webMI2ADS (aka webMI) before 2.0.2 does not properly check return values from functions, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted HTTP request.

CVSS v3
—
EG Score
0.0(none)
EPSS
93.8%
KEV
Not listed

Published

April 13, 2012

Last Modified

April 29, 2026

References (2)

Data Freshness Timeline

(refreshed 9× in last 7d / 38× 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. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-06 02:19 UTCEPSS rescore
  4. 2026-07-05 02:26 UTCEPSS rescore
  5. 2026-07-04 06:27 UTCEPSS rescore
  6. 2026-07-02 14:01 UTCEPSS rescore
  7. 2026-07-01 15:02 UTCEPSS rescore
  8. 2026-06-30 23:19 UTCEPSS rescore
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  10. 2026-06-29 14:02 UTCEPSS rescore
  11. 2026-06-28 04:53 UTCEPSS rescore
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  13. 2026-06-27 03:05 UTCEPSS rescore
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  15. 2026-06-25 13:46 UTCEPSS rescore
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  17. 2026-06-24 14:02 UTCEPSS rescore
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  19. 2026-06-23 21:30 UTCEPSS rescore
  20. 2026-06-22 14:22 UTCEPSS rescore
  21. 2026-06-22 14:22 UTCEPSS rescore
  22. 2026-06-21 01:56 UTCEPSS rescore
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  24. 2026-06-18 17:49 UTCEPSS rescore
  25. 2026-06-18 17:49 UTCEPSS rescore
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  1. 2026-06-17 17:49 UTCEPSS rescore
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  3. 2026-06-16 17:49 UTCEPSS rescore
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  5. 2026-06-15 17:44 UTCEPSS rescore
  6. 2026-06-14 23:14 UTCEPSS rescore
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  8. 2026-06-13 22:57 UTCEPSS rescore
  9. 2026-06-12 23:08 UTCEPSS rescore
  10. 2026-06-11 13:56 UTCEPSS rescore
  11. 2026-06-10 22:14 UTCEPSS rescore
  12. 2026-06-08 14:14 UTCEPSS rescore
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  14. 2026-06-07 15:22 UTCEPSS rescore
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  16. 2026-06-06 13:45 UTCEPSS rescore
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  18. 2026-06-05 22:44 UTCEPSS rescore
  19. 2026-06-05 22:44 UTCEPSS rescore
  20. 2026-06-04 13:09 UTCEPSS rescore
  21. 2026-06-02 20:10 UTCEPSS rescore
  22. 2026-06-02 20:10 UTCEPSS rescore
  23. 2026-06-01 13:49 UTCEPSS rescore
  24. 2026-05-31 22:28 UTCEPSS rescore
  25. 2026-05-31 22:28 UTCEPSS rescore
  26. 2026-05-31 00:14 UTCEPSS rescore
  27. 2026-05-31 00:14 UTCEPSS rescore
  28. 2026-05-29 13:41 UTCEPSS rescore
  29. 2026-05-29 04:54 UTCEG score recompute
  30. 2026-05-29 04:54 UTCGHSA enrichment
  31. 2026-05-28 13:42 UTCEPSS rescore
  32. 2026-05-28 13:42 UTCEPSS rescore
  33. 2026-05-26 07:16 UTCEPSS rescore
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  36. 2026-05-22 21:15 UTCEPSS rescore
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  38. 2026-05-22 21:15 UTCEPSS rescore
  39. 2026-05-21 22:39 UTCEPSS rescore
  40. 2026-05-20 11:21 UTCEPSS rescore
  41. 2026-05-20 11:21 UTCEPSS rescore
  42. 2026-05-20 11:21 UTCEPSS rescore
  43. 2026-05-18 21:29 UTCEPSS rescore
  44. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-17963✓ verified
    First seen Oct 10, 2011

    atvise webMI2ADS Web Server 1.0 - Multiple Vulnerabilities

    Open source ↗

Frequently asked(4)

What is CVE-2011-4881?
CVE-2011-4881 is a none vulnerability published on April 13, 2012. The web server in Certec atvise webMI2ADS (aka webMI) before 2.0.2 does not properly check return values from functions, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted HTTP request.
When was CVE-2011-4881 disclosed?
CVE-2011-4881 was first published in the National Vulnerability Database on April 13, 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-2011-4881 actively exploited?
CVE-2011-4881 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-4881?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4881, 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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