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TI-2020-02852 Aliases CVE-2020-3294GHSA-5668-fxhq-h7v2

Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities

Priority LOW 39CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers and Cisco Small Business RV016, RV042, and RV082 Routers could allow an authenticated, remote attacker with administrative privileges to execute arbitrary code on an affected device. The vulnerabilities are due to insufficient boundary restrictions on user-supplied input to scripts in the web-based management interface. An attacker with administrative privileges that are sufficient to log in to the web-based management interface could exploit each vulnerability by sending crafted requests that contain overly large values to an affected device, causing a stack overflow. A successful exploit could allow the attacker to cause the device to crash or allow the attacker to execute arbitrary code with root privileges on the underlying operating system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03189 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Small Business RV Series Router Firmwareall versions—No fix listedCNA
  • Cisco Small Business RV Series Router Firmware VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:cisco:rv016_firmware:*:*:*:*:*:*:*:*up to 4.2.3.10VulnerableCisco
cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv042_firmware:*:*:*:*:*:*:*:*up to 4.2.3.10VulnerableCisco
cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv042g_firmware:*:*:*:*:*:*:*:*up to 4.2.3.10VulnerableCisco
cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv082_firmware:*:*:*:*:*:*:*:*up to 4.2.3.10VulnerableCisco
cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:rv320_firmware:*:*:*:*:*:*:*:*up to 1.5.1.05VulnerableCisco
cpe:2.3:h:cisco:rv320:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:rv016_firmware:*:*:*:*:*:*:*:* Versions up to 4.2.3.10 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv042_firmware:*:*:*:*:*:*:*:* Versions up to 4.2.3.10 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv042g_firmware:*:*:*:*:*:*:*:* Versions up to 4.2.3.10 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv082_firmware:*:*:*:*:*:*:*:* Versions up to 4.2.3.10 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:rv320_firmware:*:*:*:*:*:*:*:* Versions up to 1.5.1.05 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv320:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:rv325_firmware:*:*:*:*:*:*:*:*up to 1.5.1.05VulnerableCisco
cpe:2.3:h:cisco:rv325:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:rv325_firmware:*:*:*:*:*:*:*:* Versions up to 1.5.1.05 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:rv325:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Cisco Small Business RV Series Router Firmware — 20200617 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2020-02854 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution VulnerabilitiesPriority LOW 39
    • TI-2020-02853 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution VulnerabilitiesPriority LOW 39
    • TI-2020-02851 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution VulnerabilitiesPriority LOW 39
    Show all 11 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3294
  2. 2026-10-03 Alias added: GHSA-5668-fxhq-h7v2

References

Advisory 1

  • TI-2023-06825 Command injection in Cisco Small Business RV Series Router Firmware KEVCVSS 3.1HIGH 7.2
  • TI-2023-06734 Authentication bypass by spoofing in Cisco Small Business RV Series Router Firmware CVSS 3.1CRITICAL 9.8
  • TI-2020-02854 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2020-02853 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2020-02851 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2020-02850 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences