CVE-2021-25664highCWE-835

CVE-2021-25664: high-severity vulnerability in Siemens Capital Embedded AR Classic 431-422

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 1.9%
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes the Hop-by-Hop extension header in IPv6 packets and its options lacks any checks against the length field of the header, allowing attackers to put the function into an infinite loop by supplying arbitrary length values.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Siemens · Capital Embedded AR Classic 431-422Siemens · Capital Embedded AR Classic R20-11Siemens · Nucleus NETSiemens · Nucleus ReadyStart V3Siemens · Nucleus ReadyStart V4Siemens · Nucleus Source Code
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