Bug 2532912 (CVE-2026-25832)

Summary: CVE-2026-25832 mbedtls: Mbed TLS: TLS 1.3 client accepts unadvertised group in HelloRetryRequest
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Mbed TLS. The Transport Layer Security (TLS) 1.3 client accepts a HelloRetryRequest that selects a cryptographic group not advertised by the client. This vulnerability could allow a remote attacker to cause a low integrity impact.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2532953    
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Description OSIDB Bzimport 2026-09-14 07:03:31 UTC
In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.