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CVE-2020-9934
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS…
Medium5.5Known exploitedEPSS 3.2%
- Published
- Updated
- Reserved
- Assigned by
- apple
Description
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6. A local user may be able to view sensitive user information.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Apple iOS, iPadOS, and macOS Input Validation Vulnerability.
- Added
- 8 Sept 2022
- Fix due (US federal)
- 29 Sept 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.2% · top 12% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
- A local user may be able to view sensitive user information
- CWE-noinfo Not enough information
Affected products
References (3)
- https://support.apple.com/HT211289 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211288 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9934 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-9934)Record last updated .