High severity · published Mar 30, 2022
CVE-2021-46010
Totolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration
8.8
CVSS
1.2%
EPSS
No
On KEV
Description
Totolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration. The SESSION_ID is predictable. An attacker can hijack a valid session and conduct further malicious operations.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
A3100r Firmware · Totolink
5.9c.4577 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46010
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46010
Exploit
https://hackmd.io/Ynwm8NnQSiK0xm7QKuNteg
More from A3100r Firmware
9.8
CVE-2025-4496
TOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflow
9.8
CVE-2025-45790
TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the priority parameter in the setMacQos interface of /lib/cste_modules/firewall.so
9.8
CVE-2025-45787
TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow viathe comment parameter in setIpPortFilterRules
9.8
CVE-2025-45788
TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the comment parameter in setMacFilterRules
9.8
CVE-2025-45789
TOTOLINK A3100R V5.9c.1527 is vulnerable to buffer overflow via the urlKeyword parameter in setParentalRules