Threats / Plex / CVE-2020-5741
CVE-2020-5741
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Plex Media Server vulnerability
Plex Media Server allows remote code execution through the Camera Upload feature when an attacker gains access to an administrator's Plex account, enabling malicious file execution on the server.
Verdict
Today item — known-exploited.
An authenticated attacker with administrator account access can upload a crafted file via Camera Upload to achieve arbitrary code execution on the Media Server, potentially compromising the entire system and data stored within it.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
3 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 2023-03-10).
Probability (EPSS)
EPSS 0.72936 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Plex, Media Server. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-502 Deserialization of Untrusted Data — weakness family: Injection.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 compromise or obtain credentials for a Plex administrator account through phishing, credential stuffing, or social engineering.
Business
Administrator account credentials are exposed, creating a direct pathway for unauthorized access to critical media infrastructure.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I authenticate to the Plex Media Server using the compromised administrator credentials and access the Camera Upload feature.
Business
The authentication layer fails to prevent misuse of legitimate administrative access for malicious purposes.
3
Lateral reach — past segmentation narrative 3
Attacker
I craft a malicious file and upload it through the Camera Upload mechanism, which the server deserializes and executes without proper validation.
Business
Arbitrary code execution occurs on the Media Server, allowing complete system compromise, data theft, lateral movement, or service disruption.
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