THREATPORT/VULNERABILITY/CVE-2023-20073
MEDIUM SEVERITY

CVE-2023-20073

Rv340 Firmware vulnerability

CVSS
5.3
EPSS
88.9%
EPSS pct
100th
Exploited
No known
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.
Affected vendor
Cisco
Affected product
Rv340 Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness type (CWE)
  • CWE-434 — Unrestricted Upload of File with Dangerous Type
Published
2023-04-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to integrity.

Its EPSS score of 88.9% reflects a high probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2023-20073

  • Confirm whether Cisco Rv340 Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2023-20073.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-20073

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2023-20073 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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