CASCACascade Atlas

Evidence dossier

CVE-2020-5741

CVE-2020-5741

73.3–90.1Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Deserialization of Untrusted Data in Plex Media Server on Windows allows a remote, authenticated attacker to execute arbitrary Python code.

State
PUBLISHED
Published
May 8, 2020
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS72.94%

2026-07-18 · v2026.06.15 · percentile 99.4%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

tenableoriginal assertion
container

Deserialization of Untrusted Data in Plex Media Server on Windows allows a remote, authenticated attacker to execute arbitrary Python code.

CISA KEVoriginal assertion
observed_exploitation

Plex Media Server Remote Code Execution Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.729360000000; percentile 0.993890000000

Applicability

Cited product scope

Trace impact →
n/aPlex Media Server (Windows)
[{"status": "affected", "version": "Versions prior to 1.19.3"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*; end excluding 1.19.3supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*constrained

Assessments

CVSS by origin

7.2
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.