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TI-2026-80508 Aliases CVE-2026-72753GHSA-c2qh-jpwf-6jvx

Routinator incorrectly handles delta updates

Priority MEDIUM 42CWE-755Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

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

Summary

CVE-2026-72753 affects NLnet Labs Routinator. When Routinator encounters an RRDP notification file with gaps in the delta entries, it still accepts and parses the file, which can lead to missing data. Routinator may also run out of memory when it encounters too many delta entries. The issue is classified as CWE-755 (Improper Handling of Exceptional Conditions) with a CVSS 3.1 base score of 8.2 (HIGH).

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

Description from the CNA

When Routinator encounters an RRDP notification file with gaps in the delta entries, it is still accepted and parsed, potentially leading to missing data. If it encounters too many delta entries it may run out of memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Fix Fixed Routinator (NLnet Labs): 0.15.3

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
NLnet LabsRoutinator—0.15.3Patch availableCNA
  • Routinator VendorNLnet Labs Affected — Fixed in 0.15.3 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:nlnetlabs:routinator:*:*:*:*:*:*:*:*——NLNETLABS
  • cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:* Versions — — ·NLNETLABS

Remediation

Upgrade Routinator to version 0.15.3, the fixed release.

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

  • Fix · CNA Routinator (NLnet Labs) Fixed in 0.15.3

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-72753
  2. 2026-10-26 CISA SSVC decision points changed
  3. 2026-10-26 Priority changed: MEDIUM → LOW
  4. 2026-10-27 Alias added: GHSA-c2qh-jpwf-6jvx
  5. 2026-10-27 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2026-25690 Possible arbitrary code execution during DNSSEC validation CVSS 4.0CRITICAL 9.1
  • TI-2026-56302 Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY CVSS 4.0CRITICAL 9.1
  • TI-2026-31146 Crash during DNSSEC validation of malicious content CVSS 4.0HIGH 8.7
  • TI-2026-31135 Heap overflow with multiple NSID, COOKIE, PADDING EDNS options CVSS 4.0HIGH 8.7
  • TI-2026-36436 Routinator crashes on specifically crafted RRDP XML files CVSS 4.0HIGH 8.7
  • TI-2026-36433 Routinator exits when accepting an incoming HTTP or RTR connection fails CVSS 4.0HIGH 8.7
See all 96 →

Sources

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