THREATPORT/VULNERABILITY/CVE-2021-25329
HIGH SEVERITY

CVE-2021-25329

Tomcat vulnerability

CVSS
7.0
EPSS
9.5%
EPSS pct
95th
Exploited
No known
The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.
Affected vendor
Apache
Affected product
Tomcat
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2021-03-01

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 9.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2021-25329

  • Confirm whether Apache Tomcat is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-25329.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-25329

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-25329 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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