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Exploited vulnerability · CISA KEV

Is CVE-2018-0125 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · Cisco VPN Routers · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-0125, Cisco VPN Routers Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 1506 days after it was published. It affects Cisco VPN Routers, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 25 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due15 Apr 2022BOD 22-01 deadline

What it is

A vulnerability in the web interface of the Cisco VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as root and gain full control of an affected system.

VendorCisco (103 exploited CVEs in KEV)
ProductVPN Routers
VulnerabilityCisco VPN Routers Remote Code Execution Vulnerability
WeaknessCWE-20
Published8 Feb 2018
Added to KEV25 Mar 2022
Reported by (CNA)cisco

What to do

  1. Check whether you run it. Look for VPN Routers in your asset inventory, including appliances and cloud images. Stack check lists every exploited Cisco CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 8 Feb 2018.
  4. Get told next time. Email alerts when CISA adds a CVE for Cisco.

References

Questions

Is CVE-2018-0125 being exploited?

Yes. CISA added CVE-2018-0125 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2018-0125 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2018-0125?

Apply updates per vendor instructions. Check Cisco's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected VPN Routers and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · Cisco scorecard · act-now radar.

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