CVE-2021-25664
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
55.2%
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.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| siemens | capital_vstar | - | cpe:2.3:a:siemens:capital_vstar:-:*:*:*:*:*:*:* |
| siemens | nucleus_net | - | cpe:2.3:a:siemens:nucleus_net:-:*:*:*:*:*:*:* |
| siemens | nucleus_readystart_v3 | * | cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:* |
| siemens | nucleus_readystart_v4 | * | cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:* |
| siemens | nucleus_source_code | - | cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:* |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
55.2%