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CVE record · CVE-2020-3259

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure Vulnerability

CVSS 7.5 HighCriticalIn CISA KEV · ransomwareEPSS 0.71 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 15 Feb 2024: it is known to be exploited.
  • CVSS score 7.5 (7.0 or more) and EPSS 0.71 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: cisco) at 6 May 2020, 16:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Cisco Cisco Adaptive Security Appliance (ASA) Software
  • affected n/a
Identifiers
CVE-2020-3259
CNA
cisco
Weakness (CWE)
CWE-200
Tags
Published
6 May 2020
Updated
12 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CNA (cisco)
  • CISA KEV Listed since 15 Feb 2024: known to be exploited. CISA reports use in ransomware campaigns.
  • EPSS 0.71, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 6 May 2020. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.