CVE-2023-20073

MEDIUMNVD 5.39.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-04-05. NVD baseline CVSS 5.3; sources differ by 4.5.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 89%
CISA-KEV: Not listedEPSS: 89%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
9.8(medium)
EG Risk
95(Track)
EG Risk 95/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation89% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.8%
KEV
Not listed

Published

April 5, 2023

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 14:16 UTCEPSS rescore
  4. 2026-07-23 02:18 UTCEG score recompute
  5. 2026-07-22 23:05 UTCEG score recompute
  6. 2026-07-22 14:06 UTCEPSS rescore
  7. 2026-07-15 16:56 UTCEPSS rescore
  8. 2026-07-12 05:45 UTCEPSS rescore
  9. 2026-07-12 05:45 UTCEPSS rescore
  10. 2026-07-11 08:25 UTCEPSS rescore
  11. 2026-07-11 08:25 UTCEPSS rescore
  12. 2026-07-09 19:08 UTCEPSS rescore
  13. 2026-07-04 06:29 UTCEPSS rescore
  14. 2026-07-04 06:29 UTCEPSS rescore
  15. 2026-06-28 04:54 UTCEPSS rescore
  16. 2026-06-28 04:54 UTCEPSS rescore
  17. 2026-06-25 13:48 UTCEPSS rescore
  18. 2026-06-25 13:48 UTCEPSS rescore
  19. 2026-06-23 21:31 UTCEPSS rescore
  20. 2026-06-23 21:31 UTCEPSS rescore
  21. 2026-06-15 17:47 UTCEPSS rescore
  22. 2026-06-13 22:59 UTCEPSS rescore
  23. 2026-06-12 23:10 UTCEPSS rescore
  24. 2026-06-10 22:17 UTCEPSS rescore
  25. 2026-06-08 14:15 UTCEPSS rescore
Show 13 more
  1. 2026-06-08 14:15 UTCEPSS rescore
  2. 2026-06-07 15:23 UTCEPSS rescore
  3. 2026-06-07 15:23 UTCEPSS rescore
  4. 2026-06-04 13:11 UTCEPSS rescore
  5. 2026-06-04 13:11 UTCEPSS rescore
  6. 2026-05-27 13:39 UTCEPSS rescore
  7. 2026-05-26 13:43 UTCEPSS rescore
  8. 2026-05-26 13:43 UTCEPSS rescore
  9. 2026-05-26 07:18 UTCEPSS rescore
  10. 2026-05-26 07:17 UTCEPSS rescore
  11. 2026-05-26 07:17 UTCEPSS rescore
  12. 2026-05-25 03:46 UTCEG score recompute
  13. 2026-05-25 03:46 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2023/CVE-2023-20073.yaml
    First seen Jan 1, 2023

    Cisco VPN Routers - Unauthenticated Arbitrary File Upload

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-20073?
CVE-2023-20073 is a medium vulnerability published on April 5, 2023. 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…
When was CVE-2023-20073 disclosed?
CVE-2023-20073 was first published in the National Vulnerability Database on April 5, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-20073 actively exploited?
CVE-2023-20073 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-20073?
CVE-2023-20073 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2023-20073?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20073, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-20073

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