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CVE-2020-27637

CRITICAL
9.8
CVSS Score
Published: January 12, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:09 AM UTC
1 product affected across 1 vendorCran

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cran· R Project
95%
v < 4.0.3
Affected range stops below 4.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

ExploitThird Party Advisory
Source: [email protected]
https://labs.bishopfox.com/advisories/cran-version-4.0.2
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202401-07
Vendor Advisory
Source: [email protected]
https://www.r-project.org/foundation/

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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