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TI-2026-84263 Aliases CVE-2026-121508GHSA-xr2m-r5w2-98c6

Use After Free in µD3TN BPv6 Fragmenter Cleanup

Priority LOW 27CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

D3TN GmbH µD3TN from 0 before 0.15.2 contains a use-after-free flaw in its BPv6 fragmenter cleanup code (CWE-416). When a memory allocation fails during fragmentation, the cleanup path reuses memory that has already been freed. An unauthenticated remote attacker can exploit this to cause a denial of service. The CVSS vector rates the attack complexity as high and the impact as availability only.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

Use-After-Free in µD3TN BPv6 Fragmenter Cleanup allows Unauthenticated Remote Attacker to Cause DoS on Allocation Failure

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00377 31st percentileScored 2026-11-07
Fix Fixed µD3TN (D3TN GmbH): 0.15.2

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
D3TN GmbHµD3TNbefore 0.15.20.15.2Patch availableCNA
  • µD3TN VendorD3TN GmbH Affected before 0.15.2 Fixed in 0.15.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:d3tn:ud3tn:*:*:*:*:*:*:*:*——D3TN GmbH
  • cpe:2.3:a:d3tn:ud3tn:*:*:*:*:*:*:*:* Versions — — ·D3TN GmbH

Remediation

Upgrade µD3TN to version 0.15.2, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA µD3TN (D3TN GmbH) Fixed in 0.15.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    D3TN µD3TN 0.15.2

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-84267 Out-of-bounds write in µD3TN SPP parser allows remote denial of servicePriority LOW 39
    • TI-2026-84266 Memory leak in µD3TN BPv6 EID reference handling enables denial of servicePriority LOW 39
    • TI-2026-84264 Out-of-bounds write in µD3TN BPv6 record parser enables remote DoSPriority LOW 39
    Show all 6 records →

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121508
  2. 2026-11-03 CISA SSVC decision points changed
  3. 2026-11-03 Priority changed: MEDIUM → LOW
  4. 2026-11-03 Alias added: GHSA-xr2m-r5w2-98c6

References

Other 1

  • TI-2024-11229 Double Free in µD3TN CVSS 3.1HIGH 7.5
  • TI-2026-63084 Integer Overflow or Wraparound in µD3TN CVSS 3.1HIGH 7.5
  • TI-2025-07488 NULL pointer dereference in D3TN GmbH µD3TN CVSS 3.1HIGH 7.5
  • TI-2026-84267 Out-of-bounds write in µD3TN SPP parser allows remote denial of service CVSS 3.1HIGH 7.5
  • TI-2026-84266 Memory leak in µD3TN BPv6 EID reference handling enables denial of service CVSS 3.1HIGH 7.5
  • TI-2026-84264 Out-of-bounds write in µD3TN BPv6 record parser enables remote DoS CVSS 3.1HIGH 7.5
See all 9 →

Sources

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