How severe is CVE-2020-5839?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2020-5839 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Symantec Endpoint Detection And Response

CVE-2020-5839

Symantec Endpoint Detection And Response, prior to 4.4, may be susceptible to an information disclosure issue, which is a type of vulnerability that could potentially allow unauthorized access to data.

Published 2020-07-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.020 (80.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Symantec Endpoint Detection And Response
Symantec Endpoint Detection And Response — versions Prior to 4.4

Public proof-of-concept exploits

References

support.broadcom.com/security-advisory/content/security-advisories/SEDR-Informa… (Vendor Advisory)

Frequently asked questions

What is CVE-2020-5839?: CVE-2020-5839 is a high-severity vulnerability in Symantec Endpoint Detection And Response. CVSS score: 7.5/10. Published 2020-07-08.
How severe is CVE-2020-5839?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-5839 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.