CVE-2020-24356 json
Local Privilege Escalation in cloudflared
published 2020-10-02 6 y ago modified 2026-09-10 1 mo ago also GHSA-hgwp-4vp4-qmm2 , GO-2022-0845 , EUVD-2021-1103
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
`cloudflared` versions prior to 2020.8.1 contain a local privilege escalation vulnerability on Windows systems. When run on a Windows system, `cloudflared` searches for configuration files which could be abused by a malicious entity to execute commands as a privileged user. Version 2020.8.1 fixes this issue.
Patch / fix
- go github.com/cloudflare/cloudflared 0.0.0-20200820025921-9323844ea773
- Cloudflare cloudflared 2020.8.1
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/cloudflare/cloudflared | <0.0.0-20200820025921-9323844ea773 |
0.0.0-20200820025921-9323844ea773 |
Affected products
- Cloudflare cloudflared
Classification
- Weakness
-
- CWE-427 Uncontrolled Search Path Element
References
-
github.com
/cloudflare/cloudflared/commit/9323844ea773b1444460fa09295ab8c01a88d97e
web, patch
-
github.com
/cloudflare/cloudflared/security/advisories/GHSA-hgwp-4vp4-qmm2
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-24356
advisory
-
github.com
/cloudflare/cloudflared
package
Sources
- CVE List CVE-2020-24356
- GitHub Advisory GHSA-hgwp-4vp4-qmm2
- NVD CVE-2020-24356
- OSV GO-2022-0845
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.