CVE-2026-80353
Unauthorized socket access via TOCTOU race condition
CVE-2026-80353: Unauthorized socket access via TOCTOU race condition. Not in the CISA KEV catalog. Low advisory severity (CVSS 3.6, Red Hat).
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
CVE-2026-80353 at a glance
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- Low
- CVSS base score
- 3.6 (Red Hat)
- Weakness
- CWE-367
- Fixed releases
- Red Hat: tomcat10-main-10.1.61-0.1.hum1, tomcat11-main-11.0.27-0.1.hum1, RHSA-2026:85926
- VulniPulse record
- Published · Updated
Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-80353; bulletin-wide values are not repeated here.
Is CVE-2026-80353 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-80353 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-80353?
Upgrade to a fixed release named by the vendor:
- Red Hat: tomcat10-main-10.1.61-0.1.hum1, tomcat11-main-11.0.27-0.1.hum1, RHSA-2026:85926
Vendor advisory comparison
Apache
1 advisory- Advisory severityUnrated
Advisory [CVE-2026-65183 +1] Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket
CVE-2026-80353Source published Source updated
This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector. This issue affects Apache Tomcat: from 9.0.47 through 9.0.122. Users are recommended to upgrade to version 9.0.123, which fixes the issue.
- Affected products in this advisory
- Apache Tomcat
- Source-reported affected versions
- 9.0.47 through 9.0.122.
- through 9.0.122
- Source-reported fixed versions
- 9.0.123
- Mitigation guidance
- Users are recommended to upgrade to version 9.0.123, which fixes the issue.
Red Hat
1 advisory- Advisory severityLow3.6
Low [CVE-2026-80353] Unauthorized socket access via TOCTOU race condition
CVE-2026-80353Source published Source updated
Unauthorized socket access via TOCTOU race condition. Red Hat rates this low (CVSS 3.6). Weakness: CWE-367. Red Hat lists fixing advisory RHSA-2026:85926 with package tomcat10-main-10.1.61-0.1.hum1, tomcat11-main-11.0.27-0.1.hum1. Affected product named by the advisory: Red Hat Hardened Images.
- Related products — impact not confirmed
- Red Hat Hardened Images
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- tomcat10-main-10.1.61-0.1.hum1
- tomcat11-main-11.0.27-0.1.hum1
- RHSA-2026:85926
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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