WAVLINK WN553X1-B ioos Service sub_416D88 os command injection
Affects WAVLINK WN553X1-B firmware V260403_2.0.0 (OpenWrt 21.02, aarch64 / MT7981). CVSS rates it 9.4 (critical). No fixed version is listed in the available facts.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 22/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The ioos Service component of WAVLINK WN553X1-B wireless router firmware is affected. A remote attacker can manipulate input parameters to run arbitrary operating system commands on the device, potentially taking control of it.
Read the original description
A flaw has been found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_416D88 of the file /bin/ioos of the component ioos Service. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.
What to do
Check whether your setup matches what the bug needs.
Firmware V260403_2.0.0 of the WAVLINK WN553X1-B router (OpenWrt 21.02, aarch64 / MT7981). Attacker must be authenticated and hold a valid session token.Workaround: The available facts list no workaround. Because the attack requires an authenticated session with a valid token, limiting who can log in to the router's admin interface reduces exposure until a fix is available.
Timeline
- CVE published
- First seen by cve.now
- Posted on X by cve.now
Affected versions
- WAVLINK WN553X1-B
V260403_2.0.0
Evidence 5
- Advisory
- Advisory
- Advisory
- Advisory
- Exploit
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-120228
What does this mean?
The ioos service's function sub_416D88 has an OS command injection flaw. An authenticated attacker with a valid session token can run arbitrary commands as root, which gives full control of the device.Source: github.com
Am I affected, and how do I check?
Firmware V260403_2.0.0 of the WAVLINK WN553X1-B router, which runs OpenWrt 21.02 on aarch64 / MT7981. The firmware version is listed as 'Firmware Version' in the device's own information, so compare it against V260403_2.0.0.Source: github.com
What should I do about it?
The available facts do not name a fixed version, so no upgrade target can be given. Check the vendor's support channels for an updated firmware release.Source: github.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What if there's no patch?
The available facts list no workaround. Because the attack requires an authenticated session with a valid token, limiting who can log in to the router's admin interface reduces exposure until a fix is available.Source: github.com