CVE-2008-4210

MEDIUMCVSS v2 · 4.64.6—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.6 — 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:L/AC:L/Au:N/C:P/I:P/A:P. 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 2.1% 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
Weaponized
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS v2: 4.6Exploit: Exploit-DB (verified) · public exploitExposed: 0

A fix is available — apply it.

fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O.

CVSS v2.0 (legacy)
4.6MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.6(low)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity46% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
81%
KEV
Not listed

Published

September 29, 2008

Last Modified

April 23, 2026

References (62)

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.27-9-server (2.6.27-9.19) @ intrepid2026-05-30ubuntu
redhatkernel-0:2.4.9-e.742009-01-08redhat
redhatkernel-0:2.4.18-e.672009-01-05redhat
redhatkernel-0:2.4.21-58.EL2008-12-17redhat
redhatkernel-0:2.6.9-78.0.8.EL2008-11-19redhat
redhatkernel-0:2.6.18-92.1.18.el52008-11-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Debian:4.0(3)
PackageVulnerable rangeFixed inDependents
fai-kernels1.17 ... 1.17etch1 (23 versions)1.17+etch.22etch3—
linux-2.62.6.18.dfsg.1-12 ... 2.6.18.dfsg.1-22etch2 (28 versions)2.6.18.dfsg.1-22etch3—
user-mode-linux2.6.18-1um-2 ... 2.6.18-1um-2etch4 (21 versions)2.6.18-1um-2etch.22etch3—

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 1× in last 7d / 12× 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 118 total refreshes for this CVE.

  1. 2026-09-18 19:20 UTCEPSS rescore
  2. 2026-09-17 19:20 UTCEPSS rescore
  3. 2026-09-15 03:04 UTCEPSS rescore
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  21. 2026-07-26 13:36 UTCEG score recompute▲ 4.60
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  25. 2026-07-23 00:56 UTCEG score recompute
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  1. 2026-07-23 00:35 UTCEG score recompute
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  3. 2026-07-22 21:40 UTCEG score recompute
  4. 2026-07-20 17:03 UTCEPSS rescore
  5. 2026-07-18 09:59 UTCEPSS rescore
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  40. 2026-06-19 19:22 UTCEPSS rescore
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  42. 2026-06-18 17:49 UTCEPSS rescore
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  44. 2026-06-17 17:49 UTCEPSS rescore
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  49. 2026-06-14 23:13 UTCEPSS rescore
  50. 2026-06-13 22:57 UTCEPSS rescore
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  69. 2026-05-31 22:28 UTCEPSS rescore
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  71. 2026-05-31 00:13 UTCEPSS rescore
  72. 2026-05-31 00:13 UTCEPSS rescore
  73. 2026-05-30 20:11 UTCEG score recompute
  74. 2026-05-30 20:11 UTCVendor advisory
  75. 2026-05-30 20:11 UTCGHSA enrichment

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-6851✓ verified
    First seen Oct 27, 2008

    Linux Kernel < 2.6.22 - 'ftruncate()'/'open()' Local Privilege Escalation

    Open source ↗

Related CVEs(same product + same vendor)

Frequently asked(4)

What is CVE-2008-4210?
CVE-2008-4210 is a medium vulnerability published on September 29, 2008. fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable…
When was CVE-2008-4210 disclosed?
CVE-2008-4210 was first published in the National Vulnerability Database on September 29, 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-2008-4210 actively exploited?
CVE-2008-4210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 18.8% of all scored CVEs.
How do I remediate CVE-2008-4210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-4210, 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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