PatchSiren

PatchSiren cyber security CVE debrief

CVE-2019-1653 Cisco CVE debrief

CVE-2019-1653 is a Cisco Small Business RV320 and RV325 Routers information disclosure vulnerability. CISA added it to the Known Exploited Vulnerabilities catalog, which means it is tracked as known to be exploited in the wild. The defensive takeaway is straightforward: prioritize vendor updates and verify that any affected Cisco Small Business RV320/RV325 devices are remediated according to Cisco guidance.

Vendor
Cisco
Product
Small Business RV320 and RV325 Routers
CVSS
HIGH 7.5
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Administrators and security teams responsible for Cisco Small Business RV320 and RV325 Routers should treat this as a priority, especially where the devices are used at network edges or in small-business perimeter roles.

Technical summary

The official record identifies this issue as an information disclosure vulnerability affecting Cisco Small Business RV320 and RV325 Routers. The CISA KEV entry confirms the vulnerability is known to be exploited and directs defenders to apply updates per vendor instructions. The supplied corpus does not provide additional technical mechanics, so no further impact details are asserted here.

Defensive priority

High. CISA’s KEV listing indicates known exploitation, and the catalog’s required action is to apply vendor updates. Even without a CVSS score in the supplied record, KEV status makes this a high-priority remediation item.

Recommended defensive actions

  • Inventory Cisco Small Business RV320 and RV325 Routers in your environment.
  • Confirm which devices are affected and compare installed firmware against Cisco’s remediation guidance.
  • Apply updates per vendor instructions as directed by CISA’s KEV entry.
  • Verify that remediation completed successfully and that devices are running the expected fixed version.
  • Review administrative access and logs on affected devices for signs of unauthorized activity around the remediation window.

Evidence notes

The debrief is based only on the supplied CVE record, the CISA KEV source item, and the official reference links. The source corpus states the vulnerability name, affected product family, KEV status, date added to KEV, and the required action to apply updates per vendor instructions. No unsupported exploit details, CVSS value, or additional technical behavior were added.

Sources and references

Verified primary and authoritative sources

  • CVE-2019-1653 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2019-1653

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

  • CVE-2019-1653 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2019-1653

    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.