CVE-2024-27322Public exploitNetwork attack vector

Arbitrary code execution via unbound serialized promises

Published Apr 29, 2024 · Updated Feb 13, 2025

Deserialization in R 1.4.0 through 4.3.3 allows remote attackers to execute arbitrary code through a crafted RDS file or R package. R_Unserialize accepts a serialized promise whose environment is the unbound-value marker, allowing its embedded expression to execute when the object is referenced. Execution requires a user or application to load and reference an attacker-controlled serialized object and runs with the R process's privileges.

CVSS severity8.8
High
EPSS probability23.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Deserialization in R 1.4.0 through 4.3.3 allows remote attackers to execute arbitrary code through a crafted RDS file or R package. R_Unserialize accepts a serialized promise whose environment is the unbound-value marker, allowing its embedded expression to execute when the object is referenced. Execution requires a user or application to load and reference an attacker-controlled serialized object and runs with the R process's privileges.

The record

CVE
CVE-2024-27322
Published
Apr 29, 2024
Updated
Feb 13, 2025
Vendor
R Foundation for Statistical Computing
Product
R
Classifications
CWE-502, CAPEC-586, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.0 <4.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

R Foundation for Statistical Computing · Rversion=1.4.0 <4.4.0

Published CVSS scores

8.8HiddenLayerCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo