CVE Explorer
CVE-2026-5460
A heap use-after-free exists in wolfSSL's TLS 1.3 post-quantum cryptography (PQC) hybrid KeyShare processing. In the error handling path of TLSX_KeyShare_ProcessPqcHybridClient() in src/tls.c, the inner function TLSX_KeyShare_ProcessPqcClient_ex() frees a KyberKey object upon encountering an error. The caller then invokes TLSX_KeyShare_FreeAll(), which attempts to call ForceZero() on the already-freed KyberKey, resulting in writes of zero bytes over freed heap memory.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"wolfSSL","programFiles":["src/tls.c"],"repo":"https://github.com/wolfSSL/wolfssl","vendor":"wolfSSL","versions":[{"lessThan":"5.9.1","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:8a322c84e0a24871d5133431154b1f9aa9323f39dded8c49fcc3fd1fdb983d56 · sha256:6b7625c70a379818… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpac…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:8a322c84e0a24871d5133431154b1f9aa9323f39dded8c49fcc3fd1fdb983d56 · sha256:6b7625c70a379818… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:8a322c84e0a24871d5133431154b1f9aa9323f39dded8c49fcc3fd1fdb983d56 · sha256:6b7625c70a379818… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://github.com/wolfssl/wolfssl/pull/10092"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8a322c84e0a24871d5133431154b1f9aa9323f39dded8c49fcc3fd1fdb983d56 · sha256:6b7625c70a379818… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.