CVE-2021-1300 Cisco SD-WAN Buffer Overflow Vulnerabilities

Critical 9.8 Published 20 Jan 2021 Updated 12 Nov 2024

Unauthenticated remote attackers can execute arbitrary code on Cisco SD-WAN devices due to buffer overflow vulnerabilities.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-1300?

CVE-2021-1300 is a critical memory corruption vulnerability in Cisco Catalyst Sd-Wan Manager, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2021-1300?

It affects 5 products.

Products include Cisco Catalyst Sd-Wan Manager, Cisco Ios Xe Sd-Wan, Cisco Sd-Wan Firmware, Cisco Sd-Wan Vbond Orchestrator, Cisco Sd-Wan Vsmart Controller Firmware.

How do I fix CVE-2021-1300?

No fix has been published for CVE-2021-1300 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-1300 being exploited?

There is no known exploitation of CVE-2021-1300 in the wild and no public exploit code.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-qcph-crvp-p38c.