CVE-2010-4210

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

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

The pfs_getextattr function in FreeBSD 7.x before 7.3-RELEASE and 8.x before 8.0-RC1 unlocks a mutex that was not previously locked, which allows local users to cause a denial of service (kernel panic), overwrite arbitrary memory locations, and possibly execute arbitrary code via vectors related to opening a file on a file system that uses pseudofs.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
63.1%
KEV
Not listed

Published

November 22, 2010

Last Modified

April 29, 2026

Advisory Details (5)

Auto-updated May 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

VUPEN Security - Vulnerability Research and Intelligence

http://www.vupen.com/english/advisories/2010/2956
generic
http://security.FreeBSD.org/advisories/FreeBSD-SA-10:09.pseudofs.asc
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42200
generic🟡 PoC Available

FreeBSD - 'pseudofs' Null Pointer Dereference Privilege Escalation - BSD local Exploit

https://www.exploit-db.com/exploits/15206/
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/63218

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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. 2026-07-22 21:46 UTCEG score recompute
  2. 2026-07-22 14:03 UTCEPSS rescore
  3. 2026-07-22 14:03 UTCEPSS rescore
  4. 2026-07-21 15:20 UTCEPSS rescore
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  1. 2026-06-28 04:52 UTCEPSS rescore
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  4. 2026-06-25 13:46 UTCEPSS rescore
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  22. 2026-06-14 23:14 UTCEPSS rescore
  23. 2026-06-13 22:57 UTCEPSS rescore
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  26. 2026-06-12 23:08 UTCEPSS rescore
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  28. 2026-06-11 13:56 UTCEPSS rescore
  29. 2026-06-10 22:14 UTCEPSS rescore
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  44. 2026-06-01 13:49 UTCEPSS rescore
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  46. 2026-05-31 22:28 UTCEPSS rescore
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  48. 2026-05-31 00:14 UTCEPSS rescore
  49. 2026-05-31 00:13 UTCEPSS rescore
  50. 2026-05-29 13:40 UTCEPSS rescore
  51. 2026-05-29 09:42 UTCEG score recompute
  52. 2026-05-29 09:41 UTCGHSA enrichment
  53. 2026-05-28 13:42 UTCEPSS rescore
  54. 2026-05-28 13:42 UTCEPSS rescore
  55. 2026-05-27 13:38 UTCEPSS rescore
  56. 2026-05-27 13:38 UTCEPSS rescore
  57. 2026-05-26 13:41 UTCEPSS rescore
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  59. 2026-05-26 07:16 UTCEPSS rescore
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  61. 2026-05-24 16:43 UTCEPSS rescore
  62. 2026-05-22 21:15 UTCEPSS rescore
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  65. 2026-05-21 22:39 UTCEPSS rescore
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  69. 2026-05-20 11:21 UTCEPSS rescore
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  71. 2026-05-18 21:29 UTCEPSS rescore
  72. 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-15206✓ verified
    First seen Oct 4, 2010

    FreeBSD - 'pseudofs' Null Pointer Dereference Privilege Escalation

    Open source ↗

Frequently asked(5)

What is CVE-2010-4210?
CVE-2010-4210 is a high vulnerability published on November 22, 2010. The pfs_getextattr function in FreeBSD 7.x before 7.3-RELEASE and 8.x before 8.0-RC1 unlocks a mutex that was not previously locked, which allows local users to cause a denial of service (kernel panic), overwrite arbitrary memory locations, and possibly execute arbitrary code via vectors related to…
When was CVE-2010-4210 disclosed?
CVE-2010-4210 was first published in the National Vulnerability Database on November 22, 2010, 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-2010-4210 actively exploited?
CVE-2010-4210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2010-4210?
CVE-2010-4210 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2010-4210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-4210, 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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