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"cveId": "CVE-2026-87121",
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"state": "PUBLISHED",
"assignerShortName": "icscert",
"dateReserved": "2026-09-09T21:28:27.099Z",
"datePublished": "2026-09-22T19:48:25.046Z",
"dateUpdated": "2026-09-22T20:23:09.069Z"
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"dateUpdated": "2026-09-22T19:51:50.077Z"
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"title": "Out-of-bounds write in lwIP TCP/IP Stack MQTT Client Application",
"datePublic": "2026-09-22T17:53:00.000Z",
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"url": "https://savannah.nongnu.org/projects/lwip"
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"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-01"
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"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
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"Safety": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"lang": "en",
"value": "Users of lwIP are encouraged to update their version of lwIP using the repository found at  https://savannah.nongnu.org/projects/lwip . The commit identifier that contains the fix is f89407ea711879c04d91c92b35d67be78bbaf0f1.",
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"credits": [
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"lang": "en",
"value": "Shahriyar Jalayeri of ByteRay Ltd. reported this vulnerability to CISA.",
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