CVE-2013-2094

HIGHNVD 8.49.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-09-15), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.4 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
8.4
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 48%CVSS: 8.4Exploit: NoneExposed: 0

A fix is available — apply it.

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.

CVSS v3
8.4
EG Score
9.0(high)
EPSS
98.7%
KEV
⚠ Exploited

Published

May 14, 2013

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

[CentOS-announce] CESA-2013:0830 Important CentOS 6 kernel Update

http://lists.centos.org/pipermail/centos-announce/2013-May/019733.html
generic

[CentOS-announce] CentOS-6 CVE-2013-2094 Kernel Issue

http://lists.centos.org/pipermail/centos-announce/2013-May/019729.html

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-3.8.0-21-generic (3.8.0-21.32) @ raring2026-07-21ubuntu
ubuntulinux-image-3.2.0-43-generic (3.2.0-43.68) @ precise2026-07-21ubuntu
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ raring2026-07-21ubuntu
ubuntulinux-image-3.8.0-23-generic (3.8.0-23.34~precise1) @ precise2026-07-21ubuntu
ubuntulinux-image-3.2.0-1432-omap4 (3.2.0-1432.41) @ precise2026-07-21ubuntu
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ quantal2026-07-21ubuntu
ubuntulinux-image-3.5.0-30-generic (3.5.0-30.51~precise1) @ precise2026-07-21ubuntu
ubuntulinux-image-3.5.0-30-powerpc64-smp (3.5.0-30.51) @ quantal2026-07-21ubuntu
redhatkernel-0:2.6.32-131.39.1.el62013-05-20redhat
redhatkernel-0:2.6.32-220.34.2.el62013-05-20redhat
redhatkernel-rt-0:3.6.11.2-rt33.39.el6rt2013-05-20redhat
redhatkernel-0:2.6.32-279.25.2.el62013-05-17redhat
redhatkernel-0:2.6.32-358.6.2.el62013-05-16redhat

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.

All Vendor Advisories

(14)

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 100× in last 7d / 394× 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 739 total refreshes for this CVE.

  1. 2026-07-22 14:04 UTCEPSS rescore
  2. 2026-07-22 14:04 UTCEPSS rescore
  3. 2026-07-22 13:42 UTCVendor advisory
  4. 2026-07-22 13:42 UTCGHSA enrichment
  5. 2026-07-22 09:39 UTCVendor advisory
  6. 2026-07-22 09:39 UTCGHSA enrichment
  7. 2026-07-22 05:36 UTCVendor advisory
  8. 2026-07-22 05:36 UTCGHSA enrichment
  9. 2026-07-22 01:32 UTCVendor advisory
  10. 2026-07-22 01:32 UTCGHSA enrichment
  11. 2026-07-21 19:26 UTCVendor advisory
  12. 2026-07-21 19:26 UTCGHSA enrichment
  13. 2026-07-21 15:19 UTCVendor advisory
  14. 2026-07-21 15:19 UTCGHSA enrichment
  15. 2026-07-21 14:37 UTCCISA KEV update
  16. 2026-07-21 11:17 UTCVendor advisory
  17. 2026-07-21 11:16 UTCGHSA enrichment
  18. 2026-07-21 07:11 UTCVendor advisory
  19. 2026-07-21 07:11 UTCGHSA enrichment
  20. 2026-07-21 03:09 UTCVendor advisory
  21. 2026-07-21 03:09 UTCGHSA enrichment
  22. 2026-07-20 23:06 UTCVendor advisory
  23. 2026-07-20 23:06 UTCGHSA enrichment
  24. 2026-07-20 19:03 UTCEG score recompute
  25. 2026-07-20 19:03 UTCVendor advisory
Show 75 more
  1. 2026-07-20 19:03 UTCGHSA enrichment
  2. 2026-07-20 17:03 UTCEPSS rescore
  3. 2026-07-20 17:03 UTCEPSS rescore
  4. 2026-07-20 15:00 UTCVendor advisory
  5. 2026-07-20 14:59 UTCGHSA enrichment
  6. 2026-07-20 10:56 UTCVendor advisory
  7. 2026-07-20 10:56 UTCGHSA enrichment
  8. 2026-07-20 06:54 UTCVendor advisory
  9. 2026-07-20 06:54 UTCGHSA enrichment
  10. 2026-07-20 02:29 UTCVendor advisory
  11. 2026-07-20 02:28 UTCGHSA enrichment
  12. 2026-07-19 22:25 UTCVendor advisory
  13. 2026-07-19 22:25 UTCGHSA enrichment
  14. 2026-07-19 18:22 UTCEG score recompute
  15. 2026-07-19 18:22 UTCVendor advisory
  16. 2026-07-19 18:22 UTCGHSA enrichment
  17. 2026-07-19 14:27 UTCEPSS rescore
  18. 2026-07-19 14:27 UTCEPSS rescore
  19. 2026-07-19 14:19 UTCVendor advisory
  20. 2026-07-19 14:19 UTCGHSA enrichment
  21. 2026-07-19 10:17 UTCVendor advisory
  22. 2026-07-19 10:17 UTCGHSA enrichment
  23. 2026-07-19 06:13 UTCEG score recompute
  24. 2026-07-19 06:13 UTCVendor advisory
  25. 2026-07-19 06:13 UTCGHSA enrichment
  26. 2026-07-19 02:25 UTCEPSS rescore
  27. 2026-07-19 02:25 UTCEPSS rescore
  28. 2026-07-19 02:10 UTCVendor advisory
  29. 2026-07-19 02:10 UTCGHSA enrichment
  30. 2026-07-18 22:07 UTCVendor advisory
  31. 2026-07-18 22:07 UTCGHSA enrichment
  32. 2026-07-18 18:04 UTCVendor advisory
  33. 2026-07-18 18:03 UTCGHSA enrichment
  34. 2026-07-18 13:59 UTCVendor advisory
  35. 2026-07-18 13:59 UTCGHSA enrichment
  36. 2026-07-18 09:56 UTCVendor advisory
  37. 2026-07-18 09:56 UTCGHSA enrichment
  38. 2026-07-18 05:53 UTCVendor advisory
  39. 2026-07-18 05:53 UTCGHSA enrichment
  40. 2026-07-18 01:50 UTCVendor advisory
  41. 2026-07-18 01:50 UTCGHSA enrichment
  42. 2026-07-17 21:47 UTCVendor advisory
  43. 2026-07-17 21:47 UTCGHSA enrichment
  44. 2026-07-17 17:44 UTCVendor advisory
  45. 2026-07-17 17:44 UTCGHSA enrichment
  46. 2026-07-17 13:39 UTCVendor advisory
  47. 2026-07-17 13:39 UTCGHSA enrichment
  48. 2026-07-17 09:36 UTCEG score recompute
  49. 2026-07-17 09:36 UTCVendor advisory
  50. 2026-07-17 09:36 UTCGHSA enrichment
  51. 2026-07-17 05:33 UTCVendor advisory
  52. 2026-07-17 05:33 UTCGHSA enrichment
  53. 2026-07-17 01:30 UTCVendor advisory
  54. 2026-07-17 01:30 UTCGHSA enrichment
  55. 2026-07-16 21:28 UTCVendor advisory
  56. 2026-07-16 21:28 UTCGHSA enrichment
  57. 2026-07-16 17:25 UTCVendor advisory
  58. 2026-07-16 17:25 UTCGHSA enrichment
  59. 2026-07-16 17:04 UTCCISA KEV update
  60. 2026-07-16 16:58 UTCEPSS rescore
  61. 2026-07-16 13:23 UTCVendor advisory
  62. 2026-07-16 13:22 UTCGHSA enrichment
  63. 2026-07-16 09:17 UTCVendor advisory
  64. 2026-07-16 09:17 UTCGHSA enrichment
  65. 2026-07-16 05:15 UTCVendor advisory
  66. 2026-07-16 05:15 UTCGHSA enrichment
  67. 2026-07-16 01:12 UTCVendor advisory
  68. 2026-07-16 01:12 UTCGHSA enrichment
  69. 2026-07-15 21:09 UTCVendor advisory
  70. 2026-07-15 21:09 UTCGHSA enrichment
  71. 2026-07-15 17:06 UTCVendor advisory
  72. 2026-07-15 17:06 UTCGHSA enrichment
  73. 2026-07-15 16:54 UTCEPSS rescore
  74. 2026-07-15 16:54 UTCEPSS rescore
  75. 2026-07-15 16:49 UTCCISA KEV update

Publicly available exploits

(7 references)

Working exploit code is in the public domain (4 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCtimhsutw/cve-2013-2094
    First seen Mar 29, 2015

    CVE-2013-2094 kernel exploit for i386

    Open source ↗
  • Exploit-DBEDB-33589✓ verified
    First seen May 31, 2014

    Linux Kernel 3.2.0-23/3.5.0-23 (Ubuntu 12.04/12.04.1/12.04.2 x64) - 'perf_swevent_init' Local Privilege Escalation (3)

    Open source ↗
  • GitHub PoCPashkela/CVE-2013-2094
    First seen Jun 16, 2013

    CVE-2013-2094 Linux 2.6.32/2.6.37 - 3.8.10 PERF_EVENTS local root x86/x86_64

    Open source ↗
  • Exploit-DBEDB-26131✓ verified
    First seen Jun 11, 2013

    Linux Kernel < 3.8.9 (x86-64) - 'perf_swevent_init' Local Privilege Escalation (2)

    Open source ↗
  • GitHub PoChiikezoe/libperf_event_exploit
    First seen Jun 5, 2013

    CVE-2013-2094 exploit for android

    Open source ↗
  • GitHub PoCrealtalk/cve-2013-2094
    First seen May 20, 2013

    original cve-2013-2094 exploit and a rewritten version for educational purposes

    Open source ↗
  • Exploit-DBEDB-25444
    First seen May 14, 2013

    Linux Kernel 2.6.32 < 3.x (CentOS 5/6) - 'PERF_EVENTS' Local Privilege Escalation (1)

    Open source ↗

Related CVEs(same vendor)

Frequently asked(6)

What is CVE-2013-2094?
CVE-2013-2094 is a high vulnerability published on May 14, 2013. The perfsweventinit function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perfeventopen system call.
When was CVE-2013-2094 disclosed?
CVE-2013-2094 was first published in the National Vulnerability Database on May 14, 2013, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2094 actively exploited?
Yes. CISA added CVE-2013-2094 to the Known Exploited Vulnerabilities catalog on September 15, 2022, affecting Linux Kernel. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2013-2094?
CVE-2013-2094 has a CVSS v3 base score of 8.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2013-2094?
CVE-2013-2094 affects Linux Kernel. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2013-2094?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2094, 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.

Dependency Blast Radius

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