7.5

CVE-2019-10072: apache tomcat Improper Locking

Modified
AliasesUBUNTU-CVE-2019-10072DEBIAN-CVE-2019-10072GHSA-q4hg-rmq2-52q9
Published 21-06-2019Last modified 02-11-2026

Vulnerability summary

CVE-2019-10072 is a high (CVSS 7.5) Improper Locking vulnerability in apache tomcat. EPSS estimates a 72.99% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 73% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
72.99%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 9
DSA-4680-1MGASA-2019-0260OPENSUSE-SU-2020:0038-1OPENSUSE-SU-2024:11468-1OPENSUSE-SU-2024:13441-1RHSA-2019:3929

Timeline

  1. 21-06-2019
    PublishedVulnerability first disclosed.
  2. 02-11-2026
    Last modifiedVulnerability information updated.

Description

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

72.99%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 72.99% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu2 products
  • tomcat8< 8.5.39-1ubuntu1~18.04.3
  • tomcat9< 9.0.16-3ubuntu0.18.04.1
Apache1 product
  • tomcat≥ 8.5.0, ≤ 8.5.40 | ≥ 9.0.1, ≤ 9.0.19 | 9.0.0:milestone1 | 9.0.0:milestone10 | 9.0.0:milestone11 | 9.0.0:milestone12 | 9.0.0:milestone13 | 9.0.0:milestone14 | 9.0.0:milestone15 | 9.0.0:milestone16 | 9.0.0:milestone17 | 9.0.0:milestone18 | 9.0.0:milestone19 | 9.0.0:milestone2 | 9.0.0:milestone20 | 9.0.0:milestone21 | 9.0.0:milestone22 | 9.0.0:milestone23 | 9.0.0:milestone24 | 9.0.0:milestone25 | 9.0.0:milestone26 | 9.0.0:milestone27 | 9.0.0:milestone3 | 9.0.0:milestone4 | 9.0.0:milestone5 | 9.0.0:milestone6 | 9.0.0:milestone7 | 9.0.0:milestone8 | 9.0.0:milestone9
Debian1 product
  • tomcat9< 9.0.22-1
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 9.0.0.M1, < 9.0.20 | ≥ 8.5.0, < 8.5.41

4 vendors · 5 products

References

44 links
Show all 44 references