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PatchSiren cyber security CVE debrief

CVE-2022-20701 Cisco CVE debrief

CVE-2022-20701 is a Cisco Small Business RV Series Routers stack-based buffer overflow vulnerability affecting the RV160, RV260, RV340, and RV345 series. In the supplied official records, CISA lists it as a Known Exploited Vulnerability and directs defenders to apply updates per vendor instructions. CISA added the item on 2022-03-03 and set a remediation due date of 2022-03-17.

Vendor
Cisco
Product
Small Business RV160, RV260, RV340, and RV345 Series Routers
CVSS
CRITICAL 10
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Organizations that deploy Cisco Small Business RV160, RV260, RV340, or RV345 routers should treat this as a priority, especially teams responsible for perimeter devices, branch office networking, and vulnerability remediation.

Technical summary

The supplied corpus identifies the issue as a stack-based buffer overflow in Cisco Small Business RV series routers. The authoritative CISA KEV record ties the CVE to Cisco Small Business RV160, RV260, RV340, and RV345 series routers and marks the vulnerability as known exploited. The record’s remediation guidance is to apply updates per vendor instructions; the corpus does not provide additional exploit mechanics, attack preconditions, or a CVSS score.

Defensive priority

Immediate priority

Recommended defensive actions

  • Inventory Cisco Small Business RV160, RV260, RV340, and RV345 routers across all environments.
  • Apply Cisco-provided updates or other vendor instructions as soon as practical.
  • Prioritize any internet-facing or remotely managed devices for expedited remediation.
  • Confirm affected assets are tracked to completion in your patch-management and exception process.
  • Monitor Cisco and CISA advisories for any product-specific guidance or status updates.

Evidence notes

The supplied source corpus is limited to official vulnerability and exploitation references. It identifies the CVE as a Cisco Small Business RV series stack-based buffer overflow, confirms inclusion in CISA’s Known Exploited Vulnerabilities catalog, and states the required action as applying updates per vendor instructions. The corpus does not include a CVSS score or additional technical detail beyond the affected Cisco product family and KEV timeline.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-20701 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-20701

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2022-20701 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-20701

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.