CVE-2018-8019: apache software foundation apache tomcat native Improper Certificate Validation
Vulnerability summary
CVE-2018-8019 is a high (CVSS 7.4) Improper Certificate Validation vulnerability in apache software foundation apache tomcat native. EPSS estimates a 4.05% chance of exploitation in the next 30 days, higher than 90.6% of scored vulnerabilities.
Severe, CVSS 7.4 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 1Timeline
- 31-07-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
When using an OCSP responder Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 did not correctly handle invalid responses. This allowed for revoked client certificates to be incorrectly identified. It was therefore possible for users to authenticate with revoked certificates when using mutual TLS. Users not using OCSP checks are not affected by this vulnerability.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.4HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.4HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
4.05%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
Decrease -0.02 pp
From 4.07% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- tomcat-native< 1.2.17-1
- debian_linuxEOL8.0
Apache1 product
- tomcat_native≥ 1.1.23, ≤ 1.1.34 | ≥ 1.2.0, ≤ 1.2.16
Apache software foundation1 product
- apache tomcat native1.2.0 to 1.2.16 | 1.1.23 to 1.1.34
Ubuntu1 product
- tomcat-nativeAll versions (No fix recorded)
4 vendors · 5 products
References
14 links
lists.debian.org/debian-lts-announce/2018/08/msg00023.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 14 references
- svn.apache.org/r1832832REPORT