CVE-2023-49261 is a high severity flaw, scored 7.5, in the Hongdian H8951-4G-ESP router: the tokenKey value used in user authorization is visible in the HTML source of the login page. Builds before 2310271149 are affected. Update to build 2310271149 or later and keep the router's login page off the internet.
What's affected
The record says the tokenKey value used in user authorization can be read in the HTML source of the login page. The NVD vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, with no privileges needed. Hongdian's fix is build 2310271149. CERT Polska's advisory says all builds before 2310271149 are affected, that the vendor removed the vulnerabilities in that build, and that the reporter confirmed the fix.
How to check if you're exposed
The advisory gives the cutoff as a firmware build number, so the job is to read the build off the device. Sign in to the router's management page and look at the system or firmware information screen. The exact menu name can differ, so use the vendor's documentation if you cannot find it. Compare what you see with 2310271149.
If you manage many units, record the build for each one in your asset list. Anything earlier than 2310271149 is in the affected range. There is no package manager command for this, because the software ships as part of the device firmware.
What to do now
- List every Hongdian H8951-4G-ESP router you run and read its firmware build.
- Update any unit earlier than build 2310271149 using the firmware from Hongdian. The CERT Polska advisory lists no workarounds, so the update is the remedy.
- Take the management interface off the public internet and off untrusted networks while you work through the fleet.
- Change credentials and any passwords stored in router configuration backups after the update, since several of these issues involve exposed credentials or secrets.
- Add the model to your inventory so future advisories match it automatically.
Why it matters
The record files this under CWE-201, insertion of sensitive information into sent data, and CWE-200, exposure of sensitive information to an unauthorized actor. A value that takes part in authorization should never be handed to a page that anyone can load before logging in.
CERT Polska lists this next to the guessable cookie and the hardcoded secrets. Taken together, the router leaks the pieces a visitor would need to approach its login controls, which is why the single firmware update is the sensible response.
This CVE is one of ten that CERT Polska published together for the same router on 12 January 2024. Patching for one means patching for all of them, which is why the single fixed build matters more than any individual score.
Quick check
Is the token a password?
The record calls it a value used in user authorization. The advisory text does not say how it is used beyond that, so check the CERT Polska page and apply the firmware update rather than reasoning about it.
Does the advisory offer a workaround instead of the update?
No. The CERT Polska page lists no workarounds and names the update to build 2310271149 or later as the remedy.
Sources
CERT Polska: Hongdian H8951-4G-ESP, CVE-2023-49253 to CVE-2023-49262
Last reviewed: 19 October 2026.
