CVE-2015-0311

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-04-13), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 86%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on Windows and OS X and through 11.2.202.438 on Linux allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in January 2015.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
84
EG Risk 84/100CISA SSVC

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
Severity98% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
86%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

January 23, 2015

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated Oct 8, 2026
Patch available.
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/62660
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/62650
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/62543
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/62432
generic

Unpatched Vulnerability (0day) in Flash Player is being exploited by Angler EK

http://malware.dontneedcoffee.com/2015/01/unpatched-vulnerability-0day-in-flash.html
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/62740

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatflash-plugin-0:11.2.202.440-1.el62015-01-27redhat

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

(1)

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 86× in last 7d / 379× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 1,679 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 1,579 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 09:03 UTCVendor advisory
  2. 2026-10-11 09:03 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  3. 2026-10-11 04:53 UTCVendor advisory
  4. 2026-10-11 04:53 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  5. 2026-10-11 00:44 UTCVendor advisory
  6. 2026-10-11 00:43 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  7. 2026-10-10 20:31 UTCEG score recompute
  8. 2026-10-10 20:31 UTCVendor advisory
  9. 2026-10-10 20:31 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  10. 2026-10-10 19:54 UTCEPSS rescoreEPSS 86% · 99th percentile
  11. 2026-10-10 16:22 UTCVendor advisory
  12. 2026-10-10 16:22 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  13. 2026-10-10 12:13 UTCVendor advisory
  14. 2026-10-10 12:13 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  15. 2026-10-10 08:04 UTCVendor advisory
  16. 2026-10-10 08:04 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  17. 2026-10-10 03:55 UTCVendor advisory
  18. 2026-10-10 03:55 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  19. 2026-10-09 23:46 UTCVendor advisory
  20. 2026-10-09 23:46 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  21. 2026-10-09 19:37 UTCVendor advisory
  22. 2026-10-09 19:37 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  23. 2026-10-09 15:28 UTCVendor advisory
  24. 2026-10-09 15:28 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  25. 2026-10-09 11:19 UTCVendor advisory
Show 75 more
  1. 2026-10-09 11:19 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  2. 2026-10-09 07:07 UTCVendor advisory
  3. 2026-10-09 07:07 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  4. 2026-10-09 02:57 UTCVendor advisory
  5. 2026-10-09 02:57 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  6. 2026-10-08 22:48 UTCVendor advisory
  7. 2026-10-08 22:48 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  8. 2026-10-08 18:39 UTCVendor advisory
  9. 2026-10-08 18:39 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  10. 2026-10-08 14:30 UTCVendor advisory
  11. 2026-10-08 14:29 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  12. 2026-10-08 10:16 UTCVendor advisory
  13. 2026-10-08 10:16 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  14. 2026-10-08 06:07 UTCVendor advisory
  15. 2026-10-08 06:06 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  16. 2026-10-08 01:57 UTCEG score recompute
  17. 2026-10-08 01:57 UTCVendor advisory
  18. 2026-10-08 01:56 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  19. 2026-10-07 23:40 UTCEPSS rescoreEPSS 86% · 99th percentile
  20. 2026-10-07 21:47 UTCVendor advisory
  21. 2026-10-07 21:47 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  22. 2026-10-07 17:37 UTCVendor advisory
  23. 2026-10-07 17:36 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  24. 2026-10-07 13:28 UTCVendor advisory
  25. 2026-10-07 13:28 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  26. 2026-10-07 09:19 UTCVendor advisory
  27. 2026-10-07 09:19 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  28. 2026-10-07 05:10 UTCVendor advisory
  29. 2026-10-07 05:10 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  30. 2026-10-07 01:01 UTCVendor advisory
  31. 2026-10-07 01:01 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  32. 2026-10-06 20:52 UTCVendor advisory
  33. 2026-10-06 20:51 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  34. 2026-10-06 16:40 UTCVendor advisory
  35. 2026-10-06 16:40 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  36. 2026-10-06 12:31 UTCVendor advisory
  37. 2026-10-06 12:31 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  38. 2026-10-06 08:22 UTCVendor advisory
  39. 2026-10-06 08:22 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  40. 2026-10-06 04:13 UTCVendor advisory
  41. 2026-10-06 04:13 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  42. 2026-10-06 00:04 UTCVendor advisory
  43. 2026-10-06 00:04 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  44. 2026-10-05 19:55 UTCVendor advisory
  45. 2026-10-05 19:55 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  46. 2026-10-05 15:46 UTCVendor advisory
  47. 2026-10-05 15:46 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  48. 2026-10-05 11:34 UTCVendor advisory
  49. 2026-10-05 11:34 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  50. 2026-10-05 07:25 UTCVendor advisory
  51. 2026-10-05 07:25 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  52. 2026-10-05 03:16 UTCVendor advisory
  53. 2026-10-05 03:16 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  54. 2026-10-04 23:06 UTCVendor advisory
  55. 2026-10-04 23:06 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  56. 2026-10-04 18:58 UTCVendor advisory
  57. 2026-10-04 18:58 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  58. 2026-10-04 14:49 UTCVendor advisory
  59. 2026-10-04 14:49 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  60. 2026-10-04 10:40 UTCVendor advisory
  61. 2026-10-04 10:40 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  62. 2026-10-04 06:31 UTCVendor advisory
  63. 2026-10-04 06:31 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  64. 2026-10-04 02:22 UTCVendor advisory
  65. 2026-10-04 02:22 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  66. 2026-10-03 22:13 UTCVendor advisory
  67. 2026-10-03 22:13 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  68. 2026-10-03 18:04 UTCEG score recompute
  69. 2026-10-03 18:04 UTCVendor advisory
  70. 2026-10-03 18:04 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  71. 2026-10-03 14:21 UTCEPSS rescoreEPSS 86% · 99th percentile
  72. 2026-10-03 13:53 UTCVendor advisory
  73. 2026-10-03 13:53 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8
  74. 2026-10-03 09:43 UTCVendor advisory
  75. 2026-10-03 09:43 UTCGHSA enrichmentGHSA-xvc3-rmmw-6hxp · GitHub severity HIGH · GitHub CVSS 9.8

Publicly available exploits

(2 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 1 Exploit-DB entry). Defenders should treat patch urgency accordingly.

  • Exploit-DBEDB-36360✓ verified
    Published Mar 12, 2015

    Adobe Flash Player - ByteArray UncompressViaZlibVariant Use-After-Free (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/browser/adobe_flash_uncompress_zlib_uaf✓ verified
    Published Mar 11, 2015

    Adobe Flash Player ByteArray UncompressViaZlibVariant Use After Free

    Open source ↗

Related CVEs(same vendor)

Frequently asked(6)

What is CVE-2015-0311?
CVE-2015-0311 is a critical vulnerability published on January 23, 2015. Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on Windows and OS X and through 11.2.202.438 on Linux allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in January 2015.
When was the CVE record for CVE-2015-0311 published?
The CVE record for CVE-2015-0311 was published on January 23, 2015. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 21, 2026; the record at its source may have been updated since.
Is CVE-2015-0311 actively exploited?
Yes. CISA added CVE-2015-0311 to the Known Exploited Vulnerabilities catalog on April 13, 2022, affecting Adobe Flash Player. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2015-0311?
CVE-2015-0311 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2015-0311?
CVE-2015-0311 affects Adobe Flash Player.
How do I remediate CVE-2015-0311?
A fix for CVE-2015-0311 is available: update to the fixed version the vendor names in its advisory.

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