ZeusQA
Start free

Known exploited vulnerability

CVE-2024-40891

highCVSS 3.1 8.8In CISA KEVEPSS 23%Published · Zyxel

The short answer

CVE-2024-40891 affects Zyxel VMG4325-B10A firmware and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-02-11: attackers are using it, so patch it first.

What it is

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device via Telnet.

Weakness: CWE-78.

Severity

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Feb 11, 2025

Federal due date Mar 4, 2025

EPSS, next 30 days

23%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

Affected products

VMG4325-B10A firmware. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2024-40891 being exploited?

Yes. CISA added CVE-2024-40891 to its Known Exploited Vulnerabilities catalog on 2025-02-11, with a federal remediation due date of 2025-03-04.

How do I fix CVE-2024-40891?

CISA's required action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

Related

Know the day a CVE lands in your code

Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.

Start freeSee how a run works