CVE-2023-20073

MEDIUM EXPLOITED NUCLEI

Cisco RV340, RV340W, RV345, and RV345P Firmware < 1.0.03.29 - Unauthenticated Arbitrary File Upload

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-20073 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including RegularITCat. A Nuclei detection template is also available.

AI-analyzed exploit summary This PoC exploits CVE-2023-20073, a file upload vulnerability in Cisco Small Business RV340, RV340W, RV345, and RV345P routers. It uploads a malicious HTML file to the target device, demonstrating an arbitrary file write vulnerability.

Description

A vulnerability in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an unauthenticated, remote attacker to upload arbitrary files to an affected device. This vulnerability is due to insufficient authorization enforcement mechanisms in the context of file uploads. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to upload arbitrary files to the affected device.

Exploits (1)

nomisec WORKING POC 1 stars
by RegularITCat · remote
https://github.com/RegularITCat/CVE-2023-20073

This PoC exploits CVE-2023-20073, a file upload vulnerability in Cisco Small Business RV340, RV340W, RV345, and RV345P routers. It uploads a malicious HTML file to the target device, demonstrating an arbitrary file write vulnerability.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: Cisco Small Business RV340, RV340W, RV345, RV345P routers
Auth required
Prerequisites: Network access to the target device · Valid authentication credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Cisco VPN Routers - Unauthenticated Arbitrary File Upload
CRITICALVERIFIEDby princechaddha,ritikchaddha
FOFA: app="CISCO-RV340" || app="CISCO-RV340W" || app="CISCO-RV345" || app="CISCO-RV345P" || app="cisco-rv340" || app="cisco-rv340w" || app="cisco-rv345" || app="cisco-rv345p"

References (1)

Core 1

Scores

CVSS v3 5.3
EPSS 0.8887
EPSS Percentile 99.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2023-11-15
CWE
CWE-434
Status published
Products (4)
cisco/rv340_firmware < 1.0.03.29
cisco/rv340w_firmware < 1.0.03.29
cisco/rv345_firmware < 1.0.03.29
cisco/rv345p_firmware < 1.0.03.29
Published Apr 05, 2023
Tracked Since Feb 18, 2026