How severe is CVE-2023-20073?

CVE-2023-20073 has a CVSS score of 5.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2023-20073?

Affected package information for CVE-2023-20073 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2023-20073?

No fixed version has been published for CVE-2023-20073 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2023-20073 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-20073 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2023-20073?

CVE-2023-20073 has an EPSS (Exploit Prediction Scoring System) score of 91.3%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2023-20073?

CVE-2023-20073 is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2023-20073?

CVE-2023-20073 affects cisco rv340 firmware; cisco rv340w firmware; cisco rv345 firmware; cisco rv345p firmware. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2023-20073?

A Nuclei detection template exists for CVE-2023-20073, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2023-20073 published, and has it been updated?

CVE-2023-20073 was published on April 5, 2023 and was last updated on November 21, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2023-20073: Rv340 Firmware Unrestricted File Upload (Medium…

EPSS Exploitation Probability

via FIRST.org ↗

91.3%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

Affected Products

4 products · 4 configurations

OS

rv340 firmwarecisco

≤ 1.0.03.29

range

OS

rv340w firmwarecisco

≤ 1.0.03.29

range

OS

rv345 firmwarecisco

≤ 1.0.03.29

range

OS

rv345p firmwarecisco

≤ 1.0.03.29

range

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

Is CVE-2023-20073 in your stack?

O3 detects CVE-2023-20073 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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