Read the docs
TI-2026-80471 Aliases CVE-2026-115680GHSA-56rg-rpx2-cr46

Out-of-bounds reads in Arm Keil MDK-Middleware DHCPv6 handling

Priority LOW 29CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Arm Keil MDK-Middleware versions 8.0.0 through 8.3.0 may allow DHCPv6 option-walk over-reads and unintended data retransmission. The DHCPv6 option parsing reads past the end of a buffer (CWE-125). An unauthenticated remote attacker on the network can cause limited information disclosure and limited availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Arm Keil MDK-Middleware 8.0.0-8.3.0 may allow DHCPv6 Option-Walk Over-Reads and Unintended Data Retransmission

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00345 28th 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
No
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
KeilMDK-Middleware8.0.0 – 8.3.0—No fix listedCNA
  • MDK-Middleware VendorKeil Affected 8.0.0 – 8.3.0 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for Keil MDK-Middleware.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-115680
  2. 2026-10-26 CVSS score added · CISA ADP
  3. 2026-10-26 CISA SSVC decision points changed
  4. 2026-10-27 Alias added: GHSA-56rg-rpx2-cr46

References

Other 1

  • TI-2026-80465 Out-of-bounds reads and writes in Arm Keil MDK-Middleware FTP Server CVSS 3.1MEDIUM 6.5
  • TI-2026-80464 Out-of-bounds read in Arm Keil MDK-Middleware SNMP processing CVSS 3.1MEDIUM 5.3

Sources

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