How severe is CVE-2025-23166?

CVE-2025-23166 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-2025-23166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-23166?

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-2025-23166 have an EU (EUVD) identifier?

Yes. CVE-2025-23166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15702.

When was CVE-2025-23166 published?

CVE-2025-23166 was published on 2025-05-19 and last updated on 2026-06-17.

CVE-2025-23166

CVE-2025-23166 is a high-severity vulnerability 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-248.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15702
Weakness: CWE-248
Published: 2025-05-19
Last modified: 2026-06-17

Description

The C++ method SignTraits::DeriveBits() may incorrectly call ThrowException() based on user-supplied inputs when executing in a background thread, crashing the Node.js process. Such cryptographic operations are commonly applied to untrusted inputs. Thus, this mechanism potentially allows an adversary to remotely crash a Node.js runtime.

Frequently asked questions

What is CVE-2025-23166?: The C++ method SignTraits::DeriveBits() may incorrectly call ThrowException() based on user-supplied inputs when executing in a background thread, crashing the Node.js process. Such cryptographic operations are commonly applied to untrusted inputs. Thus, this mechanism potentially allows an adversary to remotely crash a Node.js runtime.
How severe is CVE-2025-23166?: CVE-2025-23166 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-2025-23166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-23166?: 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-2025-23166 have an EU (EUVD) identifier?: Yes. CVE-2025-23166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15702.
When was CVE-2025-23166 published?: CVE-2025-23166 was published on 2025-05-19 and last updated on 2026-06-17.

References

https://nodejs.org/en/blog/vulnerability/may-2025-security-releases

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