Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
Description
A vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, Administrator-level, remote attacker to cause an unexpected reload of an affected device, resulting in a denial of service (DoS) condition. To exploit this vulnerability, an attacker would need to have valid Administrator credentials on the affected device.
This vulnerability is due to improper validation of user input that is in incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Authenticated admin-level remote attackers can cause DoS on Cisco Small Business RV042, RV042G, RV320, and RV325 routers via crafted HTTP request due to improper input validation.
Vulnerability
A vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers allows an authenticated, Administrator-level remote attacker to cause an unexpected device reload, leading to a denial of service (DoS) condition. The issue arises from improper validation of user input in incoming HTTP packets. All software releases for these models are affected [1].
Exploitation
An attacker must have valid Administrator credentials on the target device. The attacker then sends a crafted HTTP request to the web-based management interface, triggering the flaw [1].
Impact
Successful exploitation causes an unexpected reload of the affected device, resulting in a denial of service condition. This disrupts network operations until the device recovers [1].
Mitigation
Cisco has not released and will not release software updates because these products are past their End of Software Maintenance Releases dates. No workarounds are available [1].
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: 4.0.2.08-tm
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
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