{"vulnerability": "CVE-2026-87121", "sightings": [{"uuid": "2545c2a6-580a-4169-a109-1a2322c96904", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-87121", "type": "seen", "source": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-01", "content": "", "creation_timestamp": "2026-09-22T16:15:30.107258Z"}, {"uuid": "34f43967-3aad-4b17-a34e-ebfcdc154496", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-87121", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mw54rg2xyy22", "content": "\ud83d\udd34 CVE-2026-87121 - Critical (9.8)\n\nlwIP\u00a0TCP/IP Stack MQTT\u00a0is vulnerable to an out-of-bounds write, which may allow an attacker to ...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-87121/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-09-22T21:02:22.321811Z"}, {"uuid": "7c5da68a-4c21-4efc-a7c1-7735fc72c170", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-87121", "type": "seen", "source": "https://bsky.app/profile/stackflag.bsky.social/post/3mw56d2yzm22y", "content": "CVE-2026-87121 - tcp/ip stack mqtt\nThe MQTT component of the lwIP networking library can write data outside its intended memory area, which could let an attacker take control of the device. This could lead to the device\u2026\n\nToo many irrelevant or confusing CVEs? Use stackflag.com\n\n#lwip #CVE #infosec", "creation_timestamp": "2026-09-22T21:30:07.796847Z"}, {"uuid": "c7d78491-2233-47c0-b870-5f1b11c62e2b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-87121", "type": "seen", "source": "https://infosec.exchange/users/cR0w/statuses/117316841661124797", "content": "Go hack more MQTT shit.\nhttps://nvd.nist.gov/vuln/detail/cve-2026-87121", "creation_timestamp": "2026-09-22T21:35:41.348351Z"}, {"uuid": "dcd8f901-6d2a-45ce-823f-d811cbe35522", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-87121", "type": "seen", "source": "https://bsky.app/profile/stemshop.bsky.social/post/3mw5alqt56n2b", "content": "\ud83d\udea8 CVE-2026-87121 \u2014 CVSS 9.3 CRITICAL\n\nlwIP\u00a0TCP/IP Stack MQTT\u00a0is vulnerable to an out-of-bounds write, which may allow an attacker to gain full co...\n\n\ud83d\udd0e https://stemshop.top/cve/CVE-2026-87121\n\n#CVE #CyberSecurity #InfoSec", "creation_timestamp": "2026-09-22T22:10:46.741350Z"}]}