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Exploited vulnerability · CISA KEV

Is CVE-2018-14839 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · LG N1A1 NAS · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-14839, LG N1A1 NAS Remote Command Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 1046 days after it was published. It affects LG N1A1 NAS. 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

LG N1A1 NAS 3718.510 is affected by a remote code execution vulnerability.

VendorLG (1 exploited CVE in KEV)
ProductN1A1 NAS
VulnerabilityLG N1A1 NAS Remote Command Execution Vulnerability
WeaknessCWE-78
Published14 May 2019
Added to KEV25 Mar 2022
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for N1A1 NAS in your asset inventory, including appliances and cloud images. Stack check lists every exploited LG 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 14 May 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for LG.

References

Questions

Is CVE-2018-14839 being exploited?

Yes. CISA added CVE-2018-14839 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2018-14839 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-2018-14839?

Apply updates per vendor instructions. Check LG's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected N1A1 NAS 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 · act-now radar.

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