#VU48895 Improper Check for Certificate Revocation in cURL

Published: 2020-12-09 | Updated: 2023-10-28

Vulnerability identifier: #VU48895

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8286


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Client/Desktop applications / Other client software

Vendor: curl.haxx.se


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrectly implemented checks for OCSP stapling. A remote attacker can provide a fraudulent OCSP response that would appear fine, instead of the real one.

Install updates from vendor's website.

Vulnerable software versions

cURL: 7.41.0 - 7.73.0

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability