CVE-2021-1461 Cisco SD-WAN Software Signature Verification Bypass Vulnerability
An authenticated administrator can bypass signature verification to install malicious patches on Cisco SD-WAN devices, leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1461?
CVE-2021-1461 is a medium-severity vulnerability in Cisco Catalyst SD-WAN Manager, published on 18 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability in the Image Signature Verification feature of Cisco SD-WAN Software could allow an authenticated, remote attacker with Administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.Cisco has released software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability.
Weakness: CWE-347
Which versions are affected by CVE-2021-1461?
How do I fix CVE-2021-1461?
No fix has been published for CVE-2021-1461 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-1461 being exploited?
There is no known exploitation of CVE-2021-1461 in the wild and no public exploit code.
Sources
Also known as GHSA-pv55-c55f-33qw.