CVE-2020-27637
CVSS v3
9.8
CRITICAL
EPSS Score
2.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The R programming language’s default package manager CRAN is affected by a path traversal vulnerability that can lead to server compromise. This vulnerability affects packages installed via the R CMD install cli command or the install.packages() function from the interpreter. Update to version 4.0.3
Technical details
- Published
- 2021-01-12
Frequently asked questions
What is CVE-2020-27637?
The R programming language’s default package manager CRAN is affected by a path traversal vulnerability that can lead to server compromise. This vulnerability affects packages installed via the R CMD install cli command or the install.packages() function from the interpreter. Update to version 4.0.3
Is CVE-2020-27637 actively exploited?
Active exploitation of CVE-2020-27637 has not been confirmed. Its EPSS score was 2.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-27637?
CVE-2020-27637 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-27637 affecting your environment?
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