{"id":"CVE-2026-119053","aliases":["DEBIAN-CVE-2026-119053","EUVD-2026-112819","GHSA-mm46-vrwc-xmpq","UBUNTU-CVE-2026-119053"],"status":"published","title":"lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00482,"percentile":0.42076,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-29T13:08:53Z","modified":"2026-11-05T04:42:51Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.3+dfsg1-2","2.1.3+dfsg1-3","2.1.3+dfsg1-4","2.2.0+dfsg1-1","2.2.0+dfsg1-2","2.2.0+dfsg1-3","2.2.0+dfsg1-4","2.2.0+dfsg1-5","2.2.0+dfsg1-6","2.2.0+dfsg1-6.1","2.2.0+dfsg1-6.1~exp1","2.2.0+dfsg1-7","2.2.0+dfsg1-8","2.2.0+dfsg1-9","2.2.1+dfsg1-1","2.2.1+dfsg1-2","2.2.1+dfsg1-3","2.2.1+dfsg1-4","2.2.1+dfsg1-5","2.2.1+dfsg1-6","2.2.1+dfsg1-7","2.2.1+dfsg1-8","2.2.1+dfsg1-9"]},{"source":"osv","ecosystem":"Debian:13","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1+dfsg1-1","2.2.1+dfsg1-1+deb13u1","2.2.1+dfsg1-2","2.2.1+dfsg1-3","2.2.1+dfsg1-4","2.2.1+dfsg1-5","2.2.1+dfsg1-6","2.2.1+dfsg1-7","2.2.1+dfsg1-8","2.2.1+dfsg1-9"]},{"source":"osv","ecosystem":"Debian:14","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1+dfsg1-1","2.2.1+dfsg1-2","2.2.1+dfsg1-3","2.2.1+dfsg1-4","2.2.1+dfsg1-5","2.2.1+dfsg1-6","2.2.1+dfsg1-7","2.2.1+dfsg1-8","2.2.1+dfsg1-9"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-3","2.1.2-5.1","2.1.2+dfsg1-1","2.1.2+dfsg1-4","2.1.2+dfsg1-4ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2+dfsg1-8","2.1.2+dfsg1-9","2.1.3+dfsg1-1","2.1.3+dfsg1-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.3+dfsg1-2","2.1.3+dfsg1-4","2.2.0+dfsg1-2","2.2.0+dfsg1-3","2.2.0+dfsg1-4","2.2.0+dfsg1-5","2.2.0+dfsg1-6","2.2.0+dfsg1-6.1","2.2.0+dfsg1-6.1build1","2.2.0+dfsg1-6.1build2","2.2.0+dfsg1-6.1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1+dfsg1-4","2.2.1+dfsg1-5","2.2.1+dfsg1-7"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"lwip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1+dfsg1-2","2.2.1+dfsg1-3","2.2.1+dfsg1-4","2.2.1+dfsg1-4ubuntu0.1~esm1"]}],"products":[{"vendor":"lwip","product":"lwip"}],"references":[{"url":"https://github.com/lwip-tcpip/lwip/commit/e98415014aca66ef0daefded8020763b9279a3b2","tags":["patch","fix","report"]},{"url":"https://github.com/lwip-tcpip/lwip","tags":["product","package","report"]},{"url":"https://github.com/lwip-tcpip/lwip/blob/77dcd25a72509eb83f72b033d219b1d40cd8eb95/src/apps/snmp/snmp_pbuf_stream.c#L111-L122","tags":["technical-description","article","report"]},{"url":"https://www.vulncheck.com/advisories/lwip-2.0.0-through-2.2.1-snmp-agent-out-of-bounds-read-via-snmp-pbuf-stream-writeto","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119053","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mm46-vrwc-xmpq"},{"url":"https://savannah.nongnu.org/projects/lwip/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119053.json","tags":["advisory"]},{"url":"https://git.savannah.nongnu.org/git/lwip.git","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-119053","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-119053","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-119053","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-119053","title":"lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T13:08:53.56Z","modified":"2026-10-29T14:01:51.233Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:10.143031Z"}],"euvd":[{"id":"EUVD-2026-112819","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T13:08:53Z","modified":"2026-10-29T14:01:51Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:16.484344Z"}],"ghsa":[{"id":"GHSA-mm46-vrwc-xmpq","title":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability...","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T15:30:53Z","modified":"2026-10-29T15:30:58Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:14:38.729227Z"}],"nvd":[{"id":"CVE-2026-119053","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T14:17:52.463Z","modified":"2026-10-29T16:21:34.31Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:13:04.6346Z"}],"osv":[{"id":"CVE-2026-119053","title":"lwIP 2.0.0 through 2.2.1 SNMP Agent Out-of-Bounds Read via snmp_pbuf_stream_writeto()","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T13:08:53.56Z","modified":"2026-10-31T07:10:26.679236809Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:57.008854Z"},{"id":"DEBIAN-CVE-2026-119053","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T14:17:52.463Z","modified":"2026-10-30T07:00:06.78306788Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:51.374409Z"},{"id":"UBUNTU-CVE-2026-119053","description":"lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.","status":"published","published":"2026-10-29T14:17:00Z","modified":"2026-11-05T04:42:51Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-05T13:33:25.727744Z"}]}}