---
id: CVE-2026-79677
title: >-
  Missing release of resource after effective lifetime, Comparison using wrong
  factors vulnerability in Apache Tomcat allows a denial of service as a result
  of lost time outs for asynchronous WebSocket writes.




  This issue affects Apache …
summary: >-
  Missing release of resource after effective lifetime, Comparison using wrong
  factors vulnerability in Apache Tomcat allows a denial of service as a result
  of lost time outs for asynchronous WebSocket writes.




  This issue affects Apache …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-772
  - CWE-1025
vendor: Apache Software Foundation
product: Apache Tomcat
affected:
  - apache_tomcat >= 11.0.0-M1 <= 11.0.25
  - apache_tomcat >= 10.1.0-M1 <= 10.1.59
  - apache_tomcat >= 9.0.0.M1 <= 9.0.121
  - apache_tomcat >= 8.5.0 <= 8.5.100
  - apache_tomcat >= 7.0.43 <= 7.0.109
published: '2026-09-23'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T19:19:28.493'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79677'
references:
  - url: 'https://lists.apache.org/thread/bzwps6ck4szf2hmksbbon3syyl9qnkv8'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/23/27'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79677.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-79677'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2539616'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-79677'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79677'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68257'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68258'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-23T16:05:21.474452Z'
ingestedAt: '2026-09-23T12:24:04.184Z'
epss: 0.00422
epssPercentile: 0.36361
patched:
  - hardened_images
---

## Overview

Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes.



This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.



The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.



Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:68257** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68257)
- **RHSA-2026:68258** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68258)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat JBoss Web Server 5, … · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79677.json)