ExploitedIn CISA KEVFix available

CVE-2015-0311

Q: Is CVE-2015-0311 actively exploited?

Yes. CVE-2015-0311 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-05-04.

Q: What is the CVSS score for CVE-2015-0311?

CVE-2015-0311 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Exploitation confirmed. First attested on 2022-04-13 by CISA-ADP, CISA KEV, GCVE · kevintel.

Published2015-01-23
Fixed in16.0.0.287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2015-01-2321:59CVE publishedNVD
2022-04-13Listed as exploited by GCVEGCVE
2022-04-13Exploitation first reportedCISA KEV
2022-04-13Added to the CISA KEV catalogCISA KEV
2025-11-1720:17SSVC exploitation set to activeCISA-ADP
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-0311?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-0311?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Adobe flash playerversion to verify

Branch	Affected	Fixed in	Source
16.0	≥ 14.0.0.125, < 16.0.0.287	16.0.0.287	NVD
11.2	≤ 11.2.202.438	no fix published	NVD
13.0	≤ 13.0.0.262	no fix published	NVD

Microsoft internet explorerversion to verify

Branch	Affected	Fixed in	Source
10.x	= 10	no fix published	NVD
11.x	= 11	no fix published	NVD

Suse linux enterprise desktop

Branch	Affected	Fixed in	Source
11.x	= 11	no fix published	NVD
12.x	= 12	no fix published	NVD

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Adobe flash player to 16.0.0.287
CISA’s required action: The impacted product is end-of-life and should be disconnected if still in use.due 2022-05-04

Advisories and patches

helpx.adobe.comVendor Advisory
technet.microsoft.comPatch · Vendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedjr64/CVE-2015-0311

CISA Known Exploited Vulnerability

Date Added: 2022-04-13
Patch Due Date: 2022-05-04
Ransomware Use: Unknown
Required Action: The impacted product is end-of-life and should be disconnected if still in use.

Sources

CISA KEVKEV entry2022-04-13
GCVEexploitation2022-04-13
CISA-ADPSSVC decisionactive2025-11-17
OpenCVESSVC decisionactive—
CISA-ADPCVSS 3.17.82025-02-04
NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
FIRST EPSSEPSS score85.6 %read 2026-10-23
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2015-01-23
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2015-0311?

Is CVE-2015-0311 actively exploited?

Yes. CVE-2015-0311 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-05-04.

What is the CVSS score for CVE-2015-0311?

CVE-2015-0311 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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