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CVE-2025-31650

75
FAUCET Score

CVE-2025-31650 is an Improper Input Validation vulnerability in Apache Tomcat versions 9.0.76-9.0.102, 10.1.10-10.1.39, and 11.0.0-M2-11.0.5, as well as older EOL versions. This flaw allows attackers to trigger an OutOfMemoryException and denial of service by sending specially crafted HTTP priority headers that lead to memory leaks. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low complexity and no user interaction, impacting availability. While not currently in the KEV catalog, public exploit code exists (EDB-52318), and there is significant community discussion and media coverage, indicating active awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.0.76, < 9.0.104CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
>= 10.1.10, < 10.1.40CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
>= 11.0.1, < 11.0.6CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
11.0.0CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*
11.0.0CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:11.0.0:milestone11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
66.22%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-52318 · Jun 5, 2025
This CVE's current EPSS score of 0.6622 is in the 99th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcat-coyoteFixed in: 9.0.104
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcat-coyoteFixed in: 10.1.40
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcat-coyoteFixed in: 11.0.6
mavenpatch availablevia ghsa
Product: org.apache.tomcat.embed:tomcat-embed-coreFixed in: 9.0.104
mavenpatch availablevia ghsa
Product: org.apache.tomcat.embed:tomcat-embed-coreFixed in: 10.1.40
mavenpatch availablevia ghsa
Product: org.apache.tomcat.embed:tomcat-embed-coreFixed in: 11.0.6
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: tomcat9-1:9.0.87-5.el10_0.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: tomcat-1:9.0.87-1.el8_10.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: tomcat-1:9.0.87-1.el8_8.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: tomcat-1:9.0.87-1.el8_8.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: tomcat-1:9.0.87-3.el9_6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: tomcat-1:9.0.87-1.el9_2.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: tomcat-1:9.0.87-1.el9_4.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 5Fixed in: tomcat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 5.8 on RHEL 7Fixed in: jws5-tomcat-0:9.0.87-11.redhat_00010.1.el7jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 5.8 on RHEL 8Fixed in: jws5-tomcat-0:9.0.87-11.redhat_00010.1.el8jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 5.8 on RHEL 9Fixed in: jws5-tomcat-0:9.0.87-11.redhat_00010.1.el9jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6Fixed in: tomcat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 8Fixed in: jws6-tomcat-0:10.1.36-6.redhat_00007.1.el8jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 8Fixed in: jws6-tomcat-jakartaee-migration-0:1.0.6-2.redhat_00003.1.el8jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 8Fixed in: jws6-tomcat-native-0:1.3.1-1.redhat_1.el8jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 9Fixed in: jws6-tomcat-0:10.1.36-6.redhat_00007.1.el9jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 9Fixed in: jws6-tomcat-jakartaee-migration-0:1.0.6-2.redhat_00003.1.el9jws
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 6.1 on RHEL 9Fixed in: jws6-tomcat-native-0:1.3.1-1.redhat_1.el9jws
View patch

Vendor Advisories (2)

mavenGHSA-3p2h-wqq4-wf4hmedium

Apache Tomcat Denial of Service via invalid HTTP priority header

Apr 28, 2025
redhatCVE-2025-31650Important

tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame

Apr 28, 2025

References

lists.debian.org / debian-lts-announce/2025/07/msg00009.html
openwall.com / lists/oss-security/2025/04/28/2
Mailing ListThird Party Advisory
lists.apache.org / thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826
Mailing ListVendor Advisory