{"vulnerability": "CVE-2026-53921", "sightings": [{"uuid": "0f6b454f-e6d9-4747-83ad-0e535bf51fb1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "published-proof-of-concept", "source": "Telegram/Q1yPTM1HokNzfLpkFc6iUNC00bXozy1Qi_57vCkUVkSVfE8", "content": "", "creation_timestamp": "2026-07-30T00:03:20.734115Z"}, {"uuid": "8df7e396-a7a8-42eb-b548-f59af34971e6", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/netsecio.bsky.social/post/3mruyybc2vs27", "content": "\ud83d\udea8 CRITICAL RCE: A vulnerability in OpenWrt (CVE-2026-53921) allows unauthenticated attackers to gain root access via the DHCPv6 server. All versions before 24.10.8 are affected. Update your routers immediately! #OpenWrt #RCE #CVE\n\n\ud83c\udf10 cyber[.]netsecops[.]io", "creation_timestamp": "2026-07-30T17:52:32.696002Z"}, {"uuid": "8642cd44-7270-49d3-8315-bae354143689", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/thedailytechfeed.com/post/3mrpi4ffu7a2v", "content": "OpenWrt fixes critical DHCPv6 flaw (CVE-2026-53921) allowing unauthenticated code execution. Update to version 24.10.8 now. #OpenWrt #SecurityUpdate #CVE202653921 #DHCPv6 #NetworkSecurity thedailytechfeed.com/critical-ope...", "creation_timestamp": "2026-07-28T13:07:19.258903Z"}, {"uuid": "c21143e5-9919-4241-af64-0670609d123a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/postac001.bsky.social/post/3mrpmp3yu3d2v", "content": "OpenWrt 24.10.8 \u3067\u3001\u672a\u8a8d\u8a3c\u306e\u653b\u6483\u8005\u304c root \u6a29\u9650\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b DHCPv6 \u8106\u5f31\u6027\uff08CVE-2026-53921\uff09\u304c\u4fee\u6b63\u3055\u308c\u305f\u3002", "creation_timestamp": "2026-07-28T14:29:22.162827Z"}, {"uuid": "5fe4f376-e6c7-48b7-bd00-e03cff1a34f8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/newssecia.bsky.social/post/3mrpocpugbh2h", "content": "\ud83e\udd16 CVE-2026-53921 (CVSS 9.8): Critical unauthenticated DHCPv6 stack overflow in OpenWrt odhcpd allows RCE as root. OpenWrt 24.10.8 released.\nhttps://thehackernews.com/2026/07/critical-openwrt-dhcpv6-flaw-could-let.html", "creation_timestamp": "2026-07-28T14:58:13.340467Z"}, {"uuid": "e58232c9-bed8-48f1-824f-a429ed2d1ef3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://t.me/GithubRedTeam/95541", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-53921\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a 0xBlackash\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-28 14:48:04\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-53921\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-28T16:00:08.707991Z"}, {"uuid": "f2e1d530-03a1-4a3a-97fb-47f3ad478582", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://thehackernews.com/2026/07/critical-openwrt-dhcpv6-flaw-could-let.html", "content": "OpenWrt has shipped version 24.10.8 to close a critical DHCPv6 stack overflow and a wider set of remotely triggerable flaws in network services enabled by default.\n\nThe critical issue, tracked as CVE-2026-53921 and rated 9.8 on CVSS 3.1 in OpenWrt's GitHub advisory, lets an unauthenticated attacker able to reach the DHCPv6 server overwrite a stack buffer in odhcpd through a crafted DHCPv6", "creation_timestamp": "2026-07-28T16:00:46.761997Z"}, {"uuid": "8e5c09b4-5c1d-43fc-a2ef-21f094550c4b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://t.me/GithubRedTeam/95571", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #Exploit #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-53921-PoC-Exploit\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a tc4dy\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-28 17:54:09\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-53921 \u2013 odhcpd Stack Overflow (CVSS 9.8) \ud83d\udee1\ufe0f  Vuln detailed and comprehensive Write-Up and Verifier & Multi-exploit for OpenWrt DHCPv6 RCE. Dual-vector (IA_NA/IA_PD) overflow with MIPS/ARM shellcode, ROP chains, SOCKS5 proxy, persistence, log wiping & mass scanning. Use Ethically, Stay Legal. \ud83d\udd12\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-28T19:00:04.587571Z"}, {"uuid": "674244b7-7210-4fd9-bf22-03284fa4a8c7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "Telegram/tQLWQUdgxrenaG_1ckCo4_w-liyQ62FwZ9PMeIVThkncoH8", "content": "", "creation_timestamp": "2026-07-28T22:00:05.132057Z"}, {"uuid": "574c4553-de4b-4209-999e-fa6737b2169f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "Telegram/Q1yPTM1HokNzfLpkFc6iUNC00bXozy1Qi_57vCkUVkSVfE8", "content": "", "creation_timestamp": "2026-07-29T00:00:08.696410Z"}, {"uuid": "73ec7126-e2bf-4cf9-8866-ecb36f210f8f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "published-proof-of-concept", "source": "Telegram/tQLWQUdgxrenaG_1ckCo4_w-liyQ62FwZ9PMeIVThkncoH8", "content": "", "creation_timestamp": "2026-07-29T00:00:11.690498Z"}, {"uuid": "32a96ab0-30e7-4c4b-aebb-aebb9be6fbfb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/95571", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #Exploit #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-53921-PoC-Exploit\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a tc4dy\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-28 17:54:09\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-53921 \u2013 odhcpd Stack Overflow (CVSS 9.8) \ud83d\udee1\ufe0f  Vuln detailed and comprehensive Write-Up and Verifier & Multi-exploit for OpenWrt DHCPv6 RCE. Dual-vector (IA_NA/IA_PD) overflow with MIPS/ARM shellcode, ROP chains, SOCKS5 proxy, persistence, log wiping & mass scanning. Use Ethically, Stay Legal. \ud83d\udd12\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-29T00:00:28.026947Z"}, {"uuid": "7f29b2dd-fa31-44ba-a44a-519b2ed52e60", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/95541", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-53921\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a 0xBlackash\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-28 14:48:04\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-53921\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-29T00:00:32.233271Z"}, {"uuid": "b2ce25bd-dce9-4320-b6ae-95fb8066f163", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://thehackernews.com/2026/07/critical-openwrt-dhcpv6-flaw-could-let.html", "content": "OpenWrt has shipped version 24.10.8 to close a critical DHCPv6 stack overflow and a wider set of remotely triggerable flaws in network services enabled by default.\n\nThe critical issue, tracked as CVE-2026-53921 and rated 9.8 on CVSS 3.1 in OpenWrt's GitHub advisory, lets an unauthenticated attacker able to reach the DHCPv6 server overwrite a stack buffer in odhcpd through a crafted DHCPv6", "creation_timestamp": "2026-07-29T01:00:45.558920Z"}, {"uuid": "7077e61f-c46e-480d-b744-6c44c7219537", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/securityonline.bsky.social/post/3mrs3lpki4p2c", "content": "OpenWrt Vulnerability CVE-2026-53921 Demands Immediate Action", "creation_timestamp": "2026-07-29T14:01:13.891830Z"}, {"uuid": "f042bfc0-7dd4-45ad-b57c-bf3c7355fb7e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzchbl2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:12.032558Z"}, {"uuid": "e723a079-b180-4d17-adac-f0e1f78a167d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzco4d2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:12.455958Z"}, {"uuid": "c3a03bc6-d465-46ff-ab65-df36a6af9097", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcp3l2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:12.916345Z"}, {"uuid": "3e69589c-e409-4eb9-a02f-cd86422bcae2", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcq2t2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:13.387373Z"}, {"uuid": "5fe1cb73-6160-44ff-8f2c-cd942b53ca48", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcrzd2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:13.838716Z"}, {"uuid": "de2abaf8-22b9-4f04-8582-25f09bda7a7b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcsyl2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:14.264073Z"}, {"uuid": "a3e139c5-1343-4ae4-8fd7-747850629b94", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcsym2g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:14.714813Z"}, {"uuid": "5d2019a5-6445-48b5-bfaf-2bb205d3bfc5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcux42g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:15.167549Z"}, {"uuid": "5803d207-309e-4b5d-be50-6f4eb5175534", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-53921", "type": "seen", "source": "https://bsky.app/profile/sergioiker.bsky.social/post/3mrsdfzcux52g", "content": "3/ \u26a0\ufe0f Patch alert. OpenWrt routers have a critical flaw (CVE-2026-53921, CVSS 9.8) letting attackers take over with zero login. Update to 24.10.8 or 25.12.5 today if you run one.", "creation_timestamp": "2026-07-29T16:21:16.453812Z"}]}