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HIGH · CVSS 8.8 CISA Known Exploited Vulnerability

CVE-2015-8651

Adobe Flash Player Integer Overflow Vulnerability

Adobe Flash Player

Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and before 11.2.202.559 on Linux, Adobe AIR before 20.0.0.233, Adobe AIR SDK before 20.0.0.233, and Adobe AIR SDK & Compiler before 20.0.0.233 allows attackers to execute arbitrary code via unspecified vectors.

CVSS
8.8
HIGH
EPSS
67.7%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
28 Dec 2015
CWE-190

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 25 May 2022. US federal agencies were required to remediate it by 15 June 2022.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 67.7%, which is higher than 99.3% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Frequently asked questions

Is CVE-2015-8651 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2015-8651.

What does CVE-2015-8651 affect?

CVE-2015-8651 affects Adobe Flash Player. Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and before 11.2.202.559 on Linux, Adobe AIR before 20.0.0.233, Adobe AIR SDK before 20.0.0.233, and Adobe AIR SDK & Compiler before 20.0.0.233 allows attackers to execute arbitrary code via unspecified vectors.

How severe is CVE-2015-8651?

CVE-2015-8651 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 67.7%, higher than 99.3% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 15 June 2022.

How should organisations respond to CVE-2015-8651?

Apply the vendor patch for Adobe Flash Player as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.