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TI-2019-15709 Aliases CVE-2019-25656GHSA-j848-jmr8-xfgr

R i386 3.5.0 Local Buffer Overflow SEH

Priority HIGH 72CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

R i386 3.5.0 contains a local buffer overflow vulnerability in the GUI Preferences dialog that allows local attackers to trigger a structured exception handler (SEH) overwrite by supplying malicious input. Attackers can craft a payload string in the 'Language for menus and messages' field to overwrite SEH records and achieve code execution with calculator or arbitrary shellcode.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00165 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
R-ProjectR i3863.5.0—No fix listedCNA
  • R i386 VendorR-Project Affected 3.5.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Enterprise Linux AI (RHEL AI) 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-25656
  2. 2026-10-03 Alias added: GHSA-j848-jmr8-xfgr

References

Exploit 1

Other 2

  • TI-2024-18160 Deserialization of untrusted data in R-Project R CVSS 3.1HIGH 8.8
  • TI-2019-15747 R 3.4.4 Local Buffer Overflow Windows XP SP3 CVSS 4.0HIGH 8.6
  • TI-2018-15483 RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass CVSS 4.0HIGH 8.6
  • TI-2019-15538 R 3.4.4 Windows x64 Buffer Overflow SEH DEP ASLR Bypass CVSS 4.0MEDIUM 6.9
  • TI-2020-16754 The R programming language’s default package manager CRAN is affected by a path traversal… CVSS 3.1CRITICAL 9.8
  • TI-2016-07171 Buffer overflow in R-Project R CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences