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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2015-5119

Adobe Flash Player Use-After-Free Vulnerability

KEVEXPLOIT ✓CRITICAL 9.8EPSS 98.6%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.296 and 14.x through 18.0.0.194 on Windows and OS X and 11.x through 11.2.202.468 on Linux allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that overrides a valueOf function, as exploited in the wild in July 2015.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
98.62% probability · 100th percentile
Public exploits
1 in Exploit-DB · verified · first 8 July 2015
CISA KEV
Listed 3 March 2022 · due 24 March 2022
Weakness
CWE-416
Affected
adobe/flash player · redhat/enterprise linux desktop · redhat/enterprise linux eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server from rhui · redhat/enterprise linux workstation · opensuse/evergreen · opensuse/opensuse · suse/linux enterprise desktop · suse/linux enterprise workstation extension
Source
psirt@adobe.com
EPSS trend
0%50%100%30 October 2026: 98.62%30 October 202630 October 2026

EPSS 98.6% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

The impacted product is end-of-life and should be disconnected if still in use. https://nvd.nist.gov/vuln/detail/CVE-2015-5119

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-37523source ↗Adobe Flash Player - ByteArray Use-After-Free (Metasploit)multiple · Metasploitremote8 July 2015yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.