How severe is CVE-2026-49235?

CVE-2026-49235 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-49235 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49235?

CVE-2026-49235 affects Nlnetlabs Routinator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49235?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-49235 have an EU (EUVD) identifier?

Yes. CVE-2026-49235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35065.

When was CVE-2026-49235 published?

CVE-2026-49235 was published on 2026-06-08 and last updated on 2026-06-17.

CVE-2026-49235

CVE-2026-49235 is a high-severity vulnerability in Nlnetlabs Routinator with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-755.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35065
Weakness: CWE-755
Affected product: Nlnetlabs Routinator
Published: 2026-06-08
Last modified: 2026-06-17

Description

When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator crashes.

Frequently asked questions

What is CVE-2026-49235?: When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator crashes.
How severe is CVE-2026-49235?: CVE-2026-49235 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-49235 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49235?: CVE-2026-49235 affects Nlnetlabs Routinator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49235?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-49235 have an EU (EUVD) identifier?: Yes. CVE-2026-49235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35065.
When was CVE-2026-49235 published?: CVE-2026-49235 was published on 2026-06-08 and last updated on 2026-06-17.

References

https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-49235.txt

Affected products (1)

cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:*

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