CVE-2020-36425 Security feature bypass in n/a
Attackers can bypass certificate revocation checks in Mbed TLS by manipulating the local system clock, allowing revoked certificates to be accepted.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36425?
CVE-2020-36425 is a medium-severity vulnerability in Arm Mbed Tls, published on 19 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Arm Mbed TLS before 2.24.0. It incorrectly uses a revocationDate check when deciding whether to honor certificate revocation via a CRL. In some situations, an attacker can exploit this by changing the local clock.
Weakness: CWE-295
Which versions are affected by CVE-2020-36425?
It affects 2 products.
Products include Arm Mbed Tls, Debian Debian Linux.
How do I fix CVE-2020-36425?
Upgrade to a fixed version.
Is CVE-2020-36425 being exploited?
There is no known exploitation of CVE-2020-36425 in the wild and no public exploit code.
Other vulnerabilities in Arm Mbed Tls
Sources
Also known as DEBIAN-CVE-2020-36425, GHSA-jxq2-j93q-943x, JLSEC-2025-208, UBUNTU-CVE-2020-36425.