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CVE-2025-66647 RIOT OS has buffer overflow in gnrc_ipv6_ext_frag_reass

🗓️ 17 Dec 2025 20:21:13Reported by GoogleType 
osv
 osv🔗 osv.dev👁 2 Views

Buffer overflow in IPv6 fragment reassembly in Riot OS may cause memory corruption and code execution.

Related
Refs
ReporterTitlePublishedViews
Family
CNNVD		RIOT 安全漏洞
17 Dec 202500:00
–cnnvd
CVE		CVE-2025-66647
17 Dec 202520:21
–cve
Cvelist		CVE-2025-66647 RIOT OS has buffer overflow in gnrc_ipv6_ext_frag_reass
17 Dec 202520:21
–cvelist
EUVD		EUVD-2025-203946
17 Dec 202520:21
–euvd
NVD		CVE-2025-66647
17 Dec 202521:16
–nvd
Positive Technologies		PT-2025-51894
17 Dec 202500:00
–ptsecurity
RedhatCVE		CVE-2025-66647
18 Dec 202520:37
–redhatcve
Vulnrichment		CVE-2025-66647 RIOT OS has buffer overflow in gnrc_ipv6_ext_frag_reass
17 Dec 202520:21
–vulnrichment
SourceLink
githubwww.github.com/RIOT-OS/RIOT/blob/eb65305cf9f1b7affb50b17af5c12341b83a8636/sys/net/gnrc/network_layer/ipv6/ext/frag/gnrc_ipv6_ext_frag.c
githubwww.github.com/RIOT-OS/RIOT/blob/eb65305cf9f1b7affb50b17af5c12341b83a8636/sys/net/gnrc/network_layer/ipv6/ext/frag/gnrc_ipv6_ext_frag.c
githubwww.github.com/RIOT-OS/RIOT/blob/eb65305cf9f1b7affb50b17af5c12341b83a8636/sys/net/gnrc/network_layer/ipv6/ext/frag/gnrc_ipv6_ext_frag.c
githubwww.github.com/RIOT-OS/RIOT/blob/eb65305cf9f1b7affb50b17af5c12341b83a8636/sys/net/gnrc/network_layer/ipv6/ext/frag/gnrc_ipv6_ext_frag.c
githubwww.github.com/RIOT-OS/RIOT/releases/tag/2025.10
githubwww.github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66647.json
githubwww.github.com/RIOT-OS/RIOT/security/advisories/GHSA-wh3v-q6vr-j79r
nvdwww.nvd.nist.gov/vuln/detail/CVE-2025-66647

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10 Apr 2026 05:34Current
7.9High risk
Vulners AI Score7.9
CVSS 46.3
EPSS0.00668
riot operating systemipv6 fragmentationreassembly buffermemory corruptionremote code execution
2