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CVE-2026-43823

When initializing an RSA public key from DER or PEM bytes throws an error, the EVP_PKEY* is double-freed: first in the catch block, then in the deinit. This can lead to a crash on future memory allocations. This double-free manifests when BoringSSL cannot decode the public key from the bytes provided. This vulnerability is addressed in swift-crypto version 4.5.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6c6573e3c65212fe234e556eeda107dbf66ea86df3ad3e552ed4d909446427c7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"When initializing an RSA public key from DER or PEM bytes throws an error, the EVP_PKEY* is double-freed: first in the catch block, then in the deinit. This can lead to a crash on future memory allocations. This double-free manifests when BoringSSL cannot decode the public key from the bytes provided.","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"swift-crypto","vendor":"Apple","versions":[{"lessThan":"4.5.1","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"When initializing an RSA public key from DER or PEM bytes throws an error, the EVP_PKEY* is double-freed: first in the catch block, then in the deinit. This can lead to a crash on future memory allocations. This double-free manifests when BoringSSL cannot decode the public key from the bytes provided.","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /containers/adp/0/references/0
{"url":"https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a05846a98fbcd23f73f57dd6805abb125725691f1d3b4cc426e143ea40f84238 · sha256:5aee830cb48456e5… · /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.

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