What is CVE-2020-15024?

CVE-2020-15024 is a medium-severity vulnerability in Avast Antivirus, classified under Improper Removal of Sensitive Information Before Storage or Transfer. CVSS score: 5.5/10. Published 2020-09-10.

How severe is CVE-2020-15024?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2020-15024 known to be exploited?

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

Vulnerability in Avast Antivirus

CVE-2020-15024

An issue was discovered in the Login Password feature of the Password Manager component in Avast Antivirus 20.1.5069.562. An entered password continues to be stored in Windows main memory after a logout, and after a Lock Vault operation.

Published 2020-09-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Avast Antivirus — versions 20.1.5069.562

Weakness classification (CWE)

Public proof-of-concept exploits

404notf0und/CVE-Flow

References

nestedif.com/avast-antivirus-password-manager-vulnerability-improper-session-ha… (URL Repurposed, Third Party Advisory)

Frequently asked questions

What is CVE-2020-15024?: CVE-2020-15024 is a medium-severity vulnerability in Avast Antivirus, classified under Improper Removal of Sensitive Information Before Storage or Transfer. CVSS score: 5.5/10. Published 2020-09-10.
How severe is CVE-2020-15024?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-15024 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.