{"id":"CVE-2026-61695","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-61695","generatedAt":"2026-10-28T01:50:35.418Z","title":"Any Swift process decoding untrusted protobuf bytes can be crashed without authentication, user interaction, or knowledge of the target schema.","description":"Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.4.1 and 7.0.0-alpha04, Wire's Swift runtime ProtoReader.skipGroup(expectedEndTag:unknownFieldsWriter:) accepts a negative length for a LENGTH_DELIMITED field inside an unknown START_GROUP field. ProtoReader.readData() forwards the negative count to ReadBuffer.readData(count:), whose upper-bound-only check permits the value to reach Foundation Data(bytes:count:) and trigger an unrecoverable process trap instead of a catchable ProtoDecoder.Error. Any Swift process decoding untrusted protobuf bytes can be crashed without authentication, user interaction, or knowledge of the target schema. This issue is fixed in versions 6.4.1 and 7.0.0-alpha04.","published":"2026-09-23T19:17:33.000Z","lastModified":"2026-09-30T19:38:27.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-129"],"affected":[],"epss":{"score":0.0069,"percentile":0.52524,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.0058,"percentile":0.45303}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T19:17:33.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-09-23T19:17:32.810Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://github.com/square/wire/commit/24043b6b3a5e5974a978f2745b76d50b31407c1c","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/commit/81ff7f24a6795d9a8be2e03f272b2d979a5d2c7e","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/pull/3616","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/releases/tag/6.4.1","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/releases/tag/7.0.0-alpha04","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9","source":"security-advisories@github.com"},{"url":"https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-61695","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}