CVE-2009-1527

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

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

Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.

CVSS v3
—
EG Score
0.0(none)
EPSS
38.7%
KEV
Not listed

Published

May 5, 2009

Last Modified

April 23, 2026

References (22)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 42× 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
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  34. 2026-05-30 16:57 UTCEG score recompute
  35. 2026-05-30 16:57 UTCGHSA enrichment
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  46. 2026-05-24 16:43 UTCEPSS rescore
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  49. 2026-05-20 22:37 UTCEPSS rescore
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  51. 2026-05-20 11:21 UTCEPSS rescore
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  53. 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-8673✓ verified
    First seen May 13, 2009

    Linux Kernel 2.6.x (Gentoo 2.6.29rc1) - 'ptrace_attach' Local Privilege Escalation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2009-1527?
CVE-2009-1527 is a none vulnerability published on May 5, 2009. Race condition in the ptraceattach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACEATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect credexecmutex object.
When was CVE-2009-1527 disclosed?
CVE-2009-1527 was first published in the National Vulnerability Database on May 5, 2009, 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-2009-1527 actively exploited?
CVE-2009-1527 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-1527?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1527, 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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