{"id":"CVE-2026-46597","state":"PUBLISHED","title":"Invoking  byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh","description":"An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.","publishedAt":"2026-05-22T02:31:26.754Z","updatedAt":"2026-05-22T14:08:27.674Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Go","products":["golang.org/x/crypto golang.org/x/crypto/ssh"],"affected":[{"vendor":"golang.org/x/crypto","product":"golang.org/x/crypto/ssh","packageName":"golang.org/x/crypto/ssh","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.52.0","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"gcmCipher.readCipherPacket"},{"name":"Dial"},{"name":"NewClientConn"},{"name":"NewServerConn"},{"name":"curve25519sha256.Client"},{"name":"curve25519sha256.Server"},{"name":"dhGEXSHA.Client"},{"name":"dhGEXSHA.Server"},{"name":"dhGroup.Client"},{"name":"dhGroup.Server"},{"name":"ecdh.Client"},{"name":"ecdh.Server"},{"name":"mlkem768WithCurve25519sha256.Client"},{"name":"mlkem768WithCurve25519sha256.Server"}]}],"references":["https://go.dev/issue/79561","https://groups.google.com/g/golang-announce/c/a082jnz-LvI","https://go.dev/cl/781620","https://pkg.go.dev/vuln/GO-2026-5013"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46597.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46597","state":"PUBLISHED","datePublished":"2026-05-22T02:31:26.754Z","dateUpdated":"2026-05-22T14:08:27.674Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2026-05-15T17:35:00.813Z"},"containers":{"cna":{"title":"Invoking  byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh","descriptions":[{"lang":"en","value":"An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs."}],"affected":[{"vendor":"golang.org/x/crypto","product":"golang.org/x/crypto/ssh","packageName":"golang.org/x/crypto/ssh","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.52.0","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"gcmCipher.readCipherPacket"},{"name":"Dial"},{"name":"NewClientConn"},{"name":"NewServerConn"},{"name":"curve25519sha256.Client"},{"name":"curve25519sha256.Server"},{"name":"dhGEXSHA.Client"},{"name":"dhGEXSHA.Server"},{"name":"dhGroup.Client"},{"name":"dhGroup.Server"},{"name":"ecdh.Client"},{"name":"ecdh.Server"},{"name":"mlkem768WithCurve25519sha256.Client"},{"name":"mlkem768WithCurve25519sha256.Server"}]}],"references":[{"url":"https://go.dev/issue/79561"},{"url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"},{"url":"https://go.dev/cl/781620"},{"url":"https://pkg.go.dev/vuln/GO-2026-5013"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-191: Integer Underflow (Wrap or Wraparound)"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2026-05-22T02:31:26.754Z"},"credits":[{"lang":"en","value":"Maciej Kawka"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-22T14:08:24.589026Z","id":"CVE-2026-46597","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-22T14:08:27.674Z"}}]}}}