CVE-2026-120198: A vulnerability has been found in WAVLINK WL-WN530BE1-A V251117

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CRITICAL 10DOWNGRADE

CVE-2026-120198 is a critical-severity flaw (CVSS 10) affecting wl-wn530be1-a. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in WAVLINK WL-WN530BE1-A V251117. Affected is the function con_check_read_finish of the file /protocol.csp. Such manipulation of the argument group_name/IP-FROM leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

Why this priority

Critical severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	10 (Critical)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-77, CWE-74
Published	2026-11-01
Last modified	2026-11-01

Publisher (CNA): VulDB · Vendor: wavlink · Source: CVE Program record (NVD analysis pending)

Last updated 2026-11-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-01 04:15 UTCPublished CVE record published
2026-11-01 04:15 UTCUpdated Record last modified

wavlink wl-wn530be1-a DOWNGRADE

Affected: V251117

Fixed in: no fixed release known

Safe to downgrade to: a release before V251117

1. Check installed version

apt-cache policy wl-wn530be1-a || rpm -q wl-wn530be1-a || wl-wn530be1-a --version

2. No fixed release: DOWNGRADE to a release before V251117 (Debian / Ubuntu)

apt-cache madison wl-wn530be1-a sudo apt install wl-wn530be1-a=<VERSION_BEFORE_V251117> sudo apt-mark hold wl-wn530be1-a

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wl-wn530be1-a sudo dnf downgrade wl-wn530be1-a-<VERSION_BEFORE_V251117> sudo dnf versionlock add wl-wn530be1-a

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-120198 | WAVLINK WL-WN530BE1-A V251117 /protocol.csp con_check_read_finish group_name/IP-FROM command injection 2026-10-31

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2026-120198?

wl-wn530be1-a: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-120198 being exploited?

CVE-2026-120198 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-2026-120198 affect?

CVE-2026-120198 affects wl-wn530be1-a. Severity is critical (CVSS 10). A vulnerability has been found in WAVLINK WL-WN530BE1-A V251117. Affected is the function con_check_read_finish of the file /protocol.csp. Such manipulation of the argument group_name/IP-FROM leads to command injection. It is possible to la

How urgent is CVE-2026-120198?

Priority 35/100. Critical severity

References

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