CVE-2026-49235: CWE-755 Improper Handling of Exceptional Conditions in NLnet Labs Routinator
CVE-2026-49235 is a high-severity vulnerability in NLnet Labs Routinator where the software crashes upon processing a file via RRDP containing a specially crafted Document Type Definition. This issue stems from improper handling of exceptional conditions (CWE-755). No patch or official remediation guidance is currently available, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-49235 affects NLnet Labs Routinator. It occurs when Routinator processes a file delivered through RRDP that includes a maliciously crafted Document Type Definition (DTD), causing the application to crash due to improper handling of exceptional conditions (CWE-755). The CVSS 4.0 base score is 8.7, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on availability. There is no vendor advisory or patch available at this time, and the affected versions are unspecified.
Potential Impact
Successful exploitation causes Routinator to crash, resulting in a denial of service condition. The impact is high on availability (VA:H) but does not affect confidentiality, integrity, or other security properties. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor NLnet Labs communications for updates. No official mitigation or workaround is currently documented.
CVE-2026-49235: CWE-755 Improper Handling of Exceptional Conditions in NLnet Labs Routinator
Description
CVE-2026-49235 is a high-severity vulnerability in NLnet Labs Routinator where the software crashes upon processing a file via RRDP containing a specially crafted Document Type Definition. This issue stems from improper handling of exceptional conditions (CWE-755). No patch or official remediation guidance is currently available, and no known exploits are reported in the wild.
CVSS v4.0
Score 8.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-49235 affects NLnet Labs Routinator. It occurs when Routinator processes a file delivered through RRDP that includes a maliciously crafted Document Type Definition (DTD), causing the application to crash due to improper handling of exceptional conditions (CWE-755). The CVSS 4.0 base score is 8.7, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on availability. There is no vendor advisory or patch available at this time, and the affected versions are unspecified.
Potential Impact
Successful exploitation causes Routinator to crash, resulting in a denial of service condition. The impact is high on availability (VA:H) but does not affect confidentiality, integrity, or other security properties. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor NLnet Labs communications for updates. No official mitigation or workaround is currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NLnet Labs
- Date Reserved
- 2026-05-28T08:28:56.664Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a26d2d4e29bf47b50f21ca9
Added to database: 6/8/2026, 2:33:56 PM
Last enriched: 6/8/2026, 2:48:26 PM
Last updated: 6/8/2026, 3:37:40 PM
Views: 3
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