{"id":"CVE-2025-34457","revision":null,"records":[{"revision":"84bad5f8c5f44e32be7fad37adba058f","observedAt":"2026-10-29T22:48:55.035+00:00","statement":{"source":"cve-program","id":"CVE-2025-34457","aliases":[],"title":"wb2osz/direwolf <= 1.8.1 Stack-based Buffer Overflow DoS","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, prior to commit 694c954, contain a stack-based buffer overflow vulnerability in the function kiss_rec_byte() located in src/kiss_frame.c. When processing crafted KISS frames that reach the maximum allowed frame length (MAX_KISS_LEN), the function appends a terminating FEND byte without reserving sufficient space in the stack buffer. This results in an out-of-bounds write followed by an out-of-bounds read during the subsequent call to kiss_unwrap(), leading to stack memory corruption or application crashes. This vulnerability may allow remote unauthenticated attackers to trigger a denial-of-service condition.","state":0,"publishedAt":"2025-12-22T21:30:29.67+00:00","modifiedAt":"2026-10-29T21:15:15.325+00:00","affected":[{"ecosystem":"Vendor product","name":"direwolf","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"direwolf\",\n                    \"packageURL\": \"pkg:github/wb2osz/direwolf\",\n                    \"product\": \"Dire Wolf\",\n                    \"repo\": \"https://github.com/wb2osz/direwolf\",\n                    \"vendor\": \"wb2osz\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"1.8.1\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"694c95485b21c1c22bc4682703771dec4d7a374b\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.md","https://github.com/wb2osz/direwolf/issues/617","https://github.com/wb2osz/direwolf/commit/694c954","https://www.vulncheck.com/advisories/wb2osz-direwolf-stack-based-buffer-overflow-dos"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-34457","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-34457","identifiers":["CVE-2025-34457"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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