CVE-2026-12353: Missing Release of Resource after Effective Lifetime in Red Hat Red Hat Certificate System 9
An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by repeatedly sending HTTP requests to the TLS endpoint. Depending on how the RHCS server is configured, a manual intervention to restart it may prove necessary.
AI Analysis
Technical Summary
This vulnerability allows an unauthenticated attacker to trigger an Out of Memory (OOM) condition in Red Hat Certificate System 9 by repeatedly sending HTTP requests to its TLS endpoint. The root cause is a missing release of resources after their effective lifetime, leading to resource exhaustion and a crash of the Java process hosting RHCS. The attack does not require authentication or user interaction and impacts availability by causing a denial of service. No confidentiality or integrity impacts are reported. The vulnerability has a CVSS 3.1 base score of 5.3 (medium severity).
Potential Impact
The primary impact is availability loss due to the Java process crash caused by resource exhaustion. There is no impact on confidentiality or integrity. Depending on the server configuration, manual intervention may be required to restart the service after the crash.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-12353 for current remediation guidance. No official fix or workaround is stated in the provided data. Administrators should monitor the advisory for updates and be prepared to restart the service manually if the issue occurs.
CVE-2026-12353: Missing Release of Resource after Effective Lifetime in Red Hat Red Hat Certificate System 9
Description
An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by repeatedly sending HTTP requests to the TLS endpoint. Depending on how the RHCS server is configured, a manual intervention to restart it may prove necessary.
CVSS v3.1
Score 5.3medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability allows an unauthenticated attacker to trigger an Out of Memory (OOM) condition in Red Hat Certificate System 9 by repeatedly sending HTTP requests to its TLS endpoint. The root cause is a missing release of resources after their effective lifetime, leading to resource exhaustion and a crash of the Java process hosting RHCS. The attack does not require authentication or user interaction and impacts availability by causing a denial of service. No confidentiality or integrity impacts are reported. The vulnerability has a CVSS 3.1 base score of 5.3 (medium severity).
Potential Impact
The primary impact is availability loss due to the Java process crash caused by resource exhaustion. There is no impact on confidentiality or integrity. Depending on the server configuration, manual intervention may be required to restart the service after the crash.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-12353 for current remediation guidance. No official fix or workaround is stated in the provided data. Administrators should monitor the advisory for updates and be prepared to restart the service manually if the issue occurs.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-06-15T21:27:58.344Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-12353","vendor":"Red Hat"}]
Threat ID: 6a626a069c2644c7f89416c7
Added to database: 07/23/2026, 19:22:46 UTC
Last enriched: 07/30/2026, 22:45:22 UTC
Last updated: 09/07/2026, 10:52:06 UTC
Views: 91
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.