---
title: "CVE-2020-8286\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2020-8286?format=md
keywords: index, follow
---

# CVE-2020-8286

Publication date 9 December 2020

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2020-8286?format=md#impact-score)

Toggle side navigation

## Description

curl 7.41.0 through 7.73.0 is vulnerable to an improper check for
certificate revocation due to insufficient verification of the OCSP
response.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2020-8286?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| curl | 20.10 groovy | Fixed 7.68.0-1ubuntu4.2 |
| 20.04 LTS focal | Fixed 7.68.0-1ubuntu2.4 |
| 18.04 LTS bionic | Fixed 7.58.0-2ubuntu3.12 |
| 16.04 LTS xenial | Fixed 7.47.0-1ubuntu2.18 |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2020-8286?format=md#patch-details)

## Notes

---

### [alexmurray](https://launchpad.net/~alexmurray)

Affects curl versions between and including 7.41.0 and 7.73.0

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| curl | * Upstream:   [d9d0167](https://github.com/curl/curl/commit/d9d01672785b) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | High |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8286)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-8286)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-8286)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-8286)

### Related Ubuntu Security Notices (USN)

+ [USN-4665-1](https://usn.ubuntu.com/USN-4665-1)
+ curl vulnerabilities
+ 9 December 2020

### Other references

* <https://curl.se/docs/CVE-2020-8286.html>
* <https://www.cve.org/CVERecord?id=CVE-2020-8286>