PatchTheCVECVE-2026-113802: Wavlink WL-WN530BE1-A firmware through M30BE1_V251117 contains an OS command injection vulnerability in the su
CVE-2026-113802 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Wavlink WL-WN530BE1-A firmware through M30BE1_V251117 contains an OS command injection vulnerability in the sub_23B54 function of the ioos binary, which passes the unsanitized file_id parameter of /protocol.csp?opt=ovpn_file requests with type=del to popen(). A remote unauthenticated attacker can send a forged IP-FROM: 127.0.0.1 header to bypass login and execute arbitrary commands as root.
Why this priority
- Critical severity
- CISA SSVC: public proof of concept
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 3.5% (top 11%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2026-10-20 |
| Last modified | 2026-10-21 |
Last updated 2026-10-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-113802?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-113802 being exploited?
CVE-2026-113802 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-113802 affect?
CVE-2026-113802 affects affected software. Severity is critical (CVSS 9.8). Wavlink WL-WN530BE1-A firmware through M30BE1_V251117 contains an OS command injection vulnerability in the sub_23B54 function of the ioos binary, which passes the unsanitized file_id parameter of /protocol.csp?opt=ovpn_file requests with t
How urgent is CVE-2026-113802?
Priority 68/100. Critical severity; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action