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Exploited vulnerability · CISA KEV

Is CVE-2019-1652 exploited? Yes: in CISA KEV since 3 Mar 2022

Gociux · Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-1652, Cisco Small Business Routers Improper Input Validation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Mar 2022, 1134 days after it was published. It affects Cisco Small Business RV320 and RV325 Dual Gigabit WAN 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 · 3 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.2CVSS 3.0 · high
US federal due17 Mar 2022BOD 22-01 deadline

What it is

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands.

VendorCisco (103 exploited CVEs in KEV)
ProductSmall Business RV320 and RV325 Dual Gigabit WAN VPN Routers
VulnerabilityCisco Small Business Routers Improper Input Validation Vulnerability
WeaknessCWE-20
Published24 Jan 2019
Added to KEV3 Mar 2022
Reported by (CNA)cisco

What to do

  1. Check whether you run it. Look for Small Business RV320 and RV325 Dual Gigabit WAN 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 24 Jan 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Cisco.

References

Questions

Is CVE-2019-1652 being exploited?

Yes. CISA added CVE-2019-1652 to the Known Exploited Vulnerabilities catalog on 3 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-1652 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-2019-1652?

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 Small Business RV320 and RV325 Dual Gigabit WAN 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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