CVE-2018-10252 json
An issue was discovered on Actiontec WCB6200Q before 1.1.10.20a devices.
published 2018-05-14 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2326
- cvss
- 8.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
An issue was discovered on Actiontec WCB6200Q before 1.1.10.20a devices. The admin login session cookie is insecurely generated making admin session hijacking possible. When an admin logs in, a session cookie is generated using the time of day rounded to 10ms. Since the web server returns its current time of day in responses, it is possible to step backward through possible session values until a working one is found. Once a working session ID is found, an attacker then has admin control of the device and can add a secondary SSID to create a backdoor to the network.
Patch / fix
- actiontec wcb6200q_firmware 1.1.10.20a
Exploit prediction
0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-384 Session Fixation
References
-
actiontecsupport.zendesk.com
/hc/en-us/articles/115000432163-WCB6200Q-Firmware-Upgrade
issue-tracking, vendor-advisory
Sources
- CVE List CVE-2018-10252
- NVD CVE-2018-10252
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.