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CVE-2022-20700

Cisco Small Business RV Series Routers Stack-based Buffer Overflow

10.0 CRITICALActively exploited (CISA KEV)EPSS 5.66%
  1. Published10 Feb 2022
  2. Added to CISA KEV3 Mar 2022
  3. Remediation due17 Mar 2022
Actively exploited (CISA KEV)

A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

Added to KEV: 3 Mar 2022Federal remediation due: 17 Mar 2022

Description

Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Cisco Rv160 Firmware≤ 1.0.01.05
Cisco Rv160w Firmware≤ 1.0.01.05
Cisco Rv260 Firmware≤ 1.0.01.05
Cisco Rv260p Firmware≤ 1.0.01.05
Cisco Rv260w Firmware≤ 1.0.01.05
Cisco Rv340 Firmware≤ 1.0.03.24
Cisco Rv340w Firmware≤ 1.0.03.24
Cisco Rv345 Firmware≤ 1.0.03.24
Cisco Rv345p Firmware≤ 1.0.03.24

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2022-20700 being actively exploited?

Yes. CVE-2022-20700 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Mar 2022.

How severe is CVE-2022-20700?

CVE-2022-20700 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 5.66% probability of exploitation.

Which products are affected by CVE-2022-20700?

Affected products include Cisco Rv160 Firmware, Cisco Rv160w Firmware, Cisco Rv260 Firmware, Cisco Rv260p Firmware, Cisco Rv260w Firmware, and 4 more.

How do I fix CVE-2022-20700?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-20700 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.