CVE intelligence and bounded remediation

CVE-2024-20522 — Cisco Rv042 Firmware security vulnerability

Medium CVSS 6.8

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.

Severity
Medium
CVSS
6.8 (3.1)
Published
2024-10-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-122, CWE-787

Affected products

  • cisco / rv042_firmware / 1.0.1.17
  • cisco / rv042_firmware / 1.0.2.03
  • cisco / rv042_firmware / 1.1.0.09
  • cisco / rv042_firmware / 1.1.1.06
  • cisco / rv042_firmware / 1.1.1.19
  • cisco / rv042_firmware / 1.2.1.13

Showing 6 representative product identities from 156 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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