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HIGH 7.5OpenSSL

CVE-2026-18798

Description

Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet. Impact summary: Double free leads to heap corruption, which typically results in termination of QUIC server process, leading to Denial of Service. There is so far no evidence that this double free is exploitable for remote code execution, thus it is considered highly impro…

Description from NVD (National Vulnerability Database).

Product
OpenSSL
Severity
CVSS 7.5 · HIGH
Published
Source
NVD (National Vulnerability Database) · View on NVD

Severity is the CVSS score; the real impact depends on the version and configuration you run. Always check affected versions and fixes in the original advisory.