CVE-2008-4409

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 9%CVSS: —Exploit: NoneExposed: 0

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

libxml2 2.7.0 and 2.7.1 does not properly handle "predefined entities definitions" in entities, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash), as demonstrated by use of xmllint on a certain XML document, a different vulnerability than CVE-2003-1564 and CVE-2008-3281.

CVSS v3
—
EG Score
0.0(none)
EPSS
94.4%
KEV
Not listed

Published

October 3, 2008

Last Modified

April 23, 2026

References (36)

Data Freshness Timeline

(refreshed 5× 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. 2026-07-13 22:25 UTCEPSS rescore
  2. 2026-07-13 06:07 UTCEPSS rescore
  3. 2026-07-11 08:22 UTCEPSS rescore
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  15. 2026-06-30 23:19 UTCEPSS rescore
  16. 2026-06-29 14:02 UTCEPSS rescore
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  1. 2026-06-23 21:29 UTCEPSS rescore
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  4. 2026-06-21 01:56 UTCEPSS rescore
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  6. 2026-06-19 19:22 UTCEPSS rescore
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  8. 2026-06-18 17:49 UTCEPSS rescore
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  22. 2026-06-08 14:13 UTCEPSS rescore
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  24. 2026-06-05 22:44 UTCEPSS rescore
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  26. 2026-06-05 06:07 UTCEPSS rescore
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  36. 2026-05-31 00:13 UTCEPSS rescore
  37. 2026-05-31 00:13 UTCEPSS rescore
  38. 2026-05-30 20:06 UTCEG score recompute
  39. 2026-05-30 20:06 UTCGHSA enrichment
  40. 2026-05-29 13:40 UTCEPSS rescore
  41. 2026-05-28 13:42 UTCEPSS rescore
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  44. 2026-05-27 13:38 UTCEPSS rescore
  45. 2026-05-27 13:37 UTCEPSS rescore
  46. 2026-05-26 13:41 UTCEPSS rescore
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  48. 2026-05-26 07:16 UTCEPSS rescore
  49. 2026-05-26 07:16 UTCEPSS rescore
  50. 2026-05-24 16:43 UTCEPSS rescore
  51. 2026-05-22 21:15 UTCEPSS rescore
  52. 2026-05-22 21:15 UTCEPSS rescore
  53. 2026-05-20 22:37 UTCEPSS rescore
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  55. 2026-05-20 11:20 UTCEPSS rescore
  56. 2026-05-20 11:20 UTCEPSS rescore
  57. 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-32454✓ verified
    First seen Oct 2, 2008

    libxml2 - Denial of Service

    Open source ↗

Frequently asked(4)

What is CVE-2008-4409?
CVE-2008-4409 is a none vulnerability published on October 3, 2008. libxml2 2.7.0 and 2.7.1 does not properly handle "predefined entities definitions" in entities, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash), as demonstrated by use of xmllint on a certain XML document, a different vulnerability…
When was CVE-2008-4409 disclosed?
CVE-2008-4409 was first published in the National Vulnerability Database on October 3, 2008, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2008-4409 actively exploited?
CVE-2008-4409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2008-4409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-4409, 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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