Cyber Resilience

CVE-2021-1609

Critical

Published: 04 August 2021

Published
04 August 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0081 74.7th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-1609 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Cisco Small Business Rv Series Router Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 25.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Multiple vulnerabilities in the web-based management interface of the Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an attacker to do the following: Execute arbitrary code Cause a denial of service (DoS) condition…

more

Execute arbitrary commands For more information about these vulnerabilities, see the Details section of this advisory.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

cisco
small business rv series router firmware
≤ 1.0.03.22

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References