How severe is CVE-2026-26076?

CVE-2026-26076 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-2026-26076 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26076?

CVE-2026-26076 affects Tweedegolf Ntpd-rs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26076?

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-2026-26076 have an EU (EUVD) identifier?

Yes. CVE-2026-26076 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6163.

When was CVE-2026-26076 published?

CVE-2026-26076 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2026-26076

CVE-2026-26076 is a high-severity vulnerability in Tweedegolf Ntpd-rs 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6163
Weakness: CWE-770
Affected product: Tweedegolf Ntpd-rs
Published: 2026-02-12
Last modified: 2026-06-17

Description

ntpd-rs is a full-featured implementation of the Network Time Protocol. Prior to 1.7.1, an attacker can remotely induce moderate increases (2-4 times above normal) in cpu usage. When having NTS enabled on an ntpd-rs server, an attacker can create malformed NTS packets that take significantly more effort for the server to respond to by requesting a large number of cookies. This can lead to degraded server performance even when a server could otherwise handle the load. This vulnerability is fixed in 1.7.1.

Frequently asked questions

What is CVE-2026-26076?: ntpd-rs is a full-featured implementation of the Network Time Protocol. Prior to 1.7.1, an attacker can remotely induce moderate increases (2-4 times above normal) in cpu usage. When having NTS enabled on an ntpd-rs server, an attacker can create malformed NTS packets that take significantly more effort for the server to respond to by requesting a large number of cookies. This can lead to degraded server performance even when a server could otherwise handle the load. This vulnerability is fixed in 1.7.1.
How severe is CVE-2026-26076?: CVE-2026-26076 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-2026-26076 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26076?: CVE-2026-26076 affects Tweedegolf Ntpd-rs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26076?: 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-2026-26076 have an EU (EUVD) identifier?: Yes. CVE-2026-26076 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6163.
When was CVE-2026-26076 published?: CVE-2026-26076 was published on 2026-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tweedegolf:ntpd-rs:*:*:*:*:*:rust:*:*

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