CVE-2021-1473

What it is

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

64.4% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-04-08 04:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:31 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 64.4% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-04-08 04:15 UTC

Last modified

2026-06-17 03:31 UTC

Exploit probability

64.4% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Cisco rv340 Firmware < 1.0.03.21
• Cisco rv340w Firmware < 1.0.03.21
• Cisco rv345 Firmware < 1.0.03.21
• Cisco rv345p Firmware < 1.0.03.21

Attack profile CVSS 3.1 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-1473.md and follow it. Check whether this project is affected by CVE-2021-1473. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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