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Integer overflow in EPICS Base leads to out-of-bounds memory write

Priority MEDIUM 44CWE-190Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

The EPICS Community's EPICS Base releases through 7.0.10 are affected. Improper validation of message length values during protocol parsing causes an integer overflow (CWE-190) that leads to an out-of-bounds memory write. An unauthenticated remote attacker can trigger it, causing process instability or denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

In EPICS Base release 7.0.10 and prior, an improper validation of message length values during protocol parsing can trigger an integer overflow, resulting in an out-of-bounds memory write. Successful exploitation can cause process instability or denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0026 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
The EPICS CommunityEPICS Baseup to 7.0.10—No fix listedCNA

Remediation

The sources list no fixed version for EPICS Base.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-114596
  2. 2026-10-27 Alias added: GHSA-4pjg-wpv4-hhf9
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed
  5. 2026-11-04 Priority changed: LOW → MEDIUM

References

  • TI-2026-81435 Integer overflow in EPICS Base request processing corrupts memory CVSS 4.0CRITICAL 9.3
  • TI-2026-81438 Out-of-bounds read in EPICS Base network message handling CVSS 4.0HIGH 8.7
  • TI-2026-81437 Out-of-bounds read in EPICS Base network message handling CVSS 4.0HIGH 8.7

Sources