Is CVE-2015-0311 being actively exploited?

Yes. CVE-2015-0311 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on April 13, 2022.

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

CVE-2015-0311 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2015-0311

CRITICAL · CVSS 9.8CISA KEV: actively exploitedEPSS 85.6%EU EUVD: exploited

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.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS score: 85.6% (100th percentile)
In CISA KEV: Yes, added April 13, 2022
In EU EUVD: Yes (EUVD-2015-0324)
Published: January 23, 2015
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Adobe Flash Player Remote Code Execution Vulnerability

Added to the KEV catalog on April 13, 2022; federal remediation due May 4, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-0324 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on November 17, 2025.

View on the EU Vulnerability Database

Affected products

adobe / flash player
apple / mac os x
linux / linux kernel
microsoft / edge
microsoft / internet explorer
microsoft / internet explorer
microsoft / windows
microsoft / windows 10 1507
microsoft / windows 8
microsoft / windows 8.1
microsoft / windows rt
microsoft / windows rt 8.1
microsoft / windows server 2012
microsoft / windows server 2012
suse / linux enterprise desktop
suse / linux enterprise desktop
suse / linux enterprise workstation extension

References

http://helpx.adobe.com/security/products/flash-player/apsa15-01.html(Vendor Advisory)
http://helpx.adobe.com/security/products/flash-player/apsb15-03.html(Broken Link)
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00027.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00031.html(Mailing List, Third Party Advisory)
http://malware.dontneedcoffee.com/2015/01/unpatched-vulnerability-0day-in-flash.html(Third Party Advisory)
http://secunia.com/advisories/62432(Broken Link)
http://secunia.com/advisories/62543(Broken Link)
http://secunia.com/advisories/62650(Broken Link)
http://secunia.com/advisories/62660(Broken Link)
http://secunia.com/advisories/62740(Broken Link)
http://security.gentoo.org/glsa/glsa-201502-02.xml(Third Party Advisory)
http://www.securityfocus.com/bid/72283(Broken Link, Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1031597(Broken Link, Third Party Advisory, VDB Entry)
https://github.com/cisagov/vulnrichment/issues/196(Issue Tracking)
https://technet.microsoft.com/library/security/2755801(Patch, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-0311(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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