CVE-2023-20073

criticalpriority · act · 81EPSS 0.901 · 100 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

90.1% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

14 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Small Business RV Series Router Firmwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.3–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · psirt@cisco.com USexploitability 3.9 · impact 1.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-434USprimaryCWE-434US

exploits (1)

Public proof-of-concept and weaponised exploit code.

RegularITCat/CVE-2023-20073PoC based on https://unsafe[.]sh/go-173464.html researchPoC · poc_in_github

affected products (14)

Products and version ranges known to be affected.

Cisco Small Business RV340 Dual WAN Gigabit VPN Routersall versionscert_bundDEcpe:/h:cisco:small_business:rv340_dual_wan_gigabit_vpn_routers
Cisco Small Business RV340W Dual WAN Gigabit Wireless-AC VPN Routersall versionscert_bundDEcpe:/h:cisco:small_business:rv340w_dual_wan_gigabit_wireless-ac_vpn_routers
Cisco Small Business RV345 Dual WAN Gigabit VPN Routersall versionscert_bundDEcpe:/h:cisco:small_business:rv345_dual_wan_gigabit_vpn_routers
Cisco Small Business RV345P Dual WAN Gigabit POE VPN Routersall versionscert_bundDEcpe:/h:cisco:small_business:rv345p_dual_wan_gigabit_poe_vpn_routers
Cisco Cisco Small Business RV Series Router Firmwareall versionscisco_csafUS
Cisco Cisco Small Business RV Series Router Firmware≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco RV340≤ 1.0.03.29fstec_bduRU
Cisco Systems Inc. Cisco RV340W≤ 1.0.03.29fstec_bduRU
Cisco Systems Inc. Cisco RV345≤ 1.0.03.29fstec_bduRU
Cisco Systems Inc. Cisco RV345P≤ 1.0.03.29fstec_bduRU
cisco rv340 firmware≤ 1.0.03.29nvdUScpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:*
cisco rv340w firmware≤ 1.0.03.29nvdUScpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:*
cisco rv345 firmware≤ 1.0.03.29nvdUScpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:*
cisco rv345p firmware≤ 1.0.03.29nvdUScpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0252Cisco Small Business: Schwachstelle ermöglicht Manipulation von DateienDeutsch2023-02-01csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Small Business ausnutzen, um Dateien zu manipulieren.
cisco-sa-sb-rv-afu-EXxwA65VCisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Arbitrary File Upload Vulnerability2023-02-01csaf · cisco_csafUS
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. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisco_csaf nvd NVD CVE.org MITRE

published 2023-04-05modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

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