Threats / Adobe / CVE-2015-5122
CVE-2015-5122
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Adobe Flash Player vulnerability
Use-after-free vulnerability in Adobe Flash Player's ActionScript 3 DisplayObject class enables remote code execution or denial of service.
Verdict
Today item — known-exploited.
A use-after-free flaw in Flash Player's AS3 implementation allows attackers to execute arbitrary code or crash the application through crafted content. The vulnerability has been actively exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
16 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-13).
Probability (EPSS)
EPSS 0.93688 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Adobe, Flash Player. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft malicious Flash content that triggers improper memory management in the DisplayObject class.
Business
Users visiting compromised or attacker-controlled websites face immediate code execution risk without patching.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I deliver the exploit via web pages, email attachments, or compromised ad networks to reach target systems.
Business
Attack surface spans all web browsers with Flash enabled, affecting millions of endpoints across enterprises and consumers.
3
Lateral reach — past segmentation narrative 3
Attacker
I gain code execution in the Flash Player process context, bypassing browser sandbox protections.
Business
Attackers establish persistent access, steal credentials, deploy malware, or pivot to internal networks.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05