How severe is CVE-2025-27611?

CVE-2025-27611 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2025-27611 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.

How do I fix CVE-2025-27611?

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-2025-27611 have an EU (EUVD) identifier?

Yes. CVE-2025-27611 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12752.

When was CVE-2025-27611 published?

CVE-2025-27611 was published on 2025-04-30 and last updated on 2026-06-17.

CVE-2025-27611

CVE-2025-27611 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-1007.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12752
Weakness: CWE-1007
Published: 2025-04-30
Last modified: 2026-06-17

Description

base-x is a base encoder and decoder of any given alphabet using bitcoin style leading zero compression. Versions 4.0.0, 5.0.0, and all prior to 3.0.11, are vulnerable to attackers potentially deceiving users into sending funds to an unintended address. This issue has been patched in versions 3.0.11, 4.0.1, and 5.0.1.

Frequently asked questions

What is CVE-2025-27611?: base-x is a base encoder and decoder of any given alphabet using bitcoin style leading zero compression. Versions 4.0.0, 5.0.0, and all prior to 3.0.11, are vulnerable to attackers potentially deceiving users into sending funds to an unintended address. This issue has been patched in versions 3.0.11, 4.0.1, and 5.0.1.
How severe is CVE-2025-27611?: CVE-2025-27611 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2025-27611 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.
How do I fix CVE-2025-27611?: 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-2025-27611 have an EU (EUVD) identifier?: Yes. CVE-2025-27611 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12752.
When was CVE-2025-27611 published?: CVE-2025-27611 was published on 2025-04-30 and last updated on 2026-06-17.

References

Other CWE-1007 vulnerabilities

CVE-2025-0996 — Medium (CVSS 5.4): Inappropriate implementation in Browser UI in Google Chrome on Android prior to 133.0.6943.98 allowed a remote attacker…
CVE-2021-4221 — Medium (CVSS 4.3): If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This…

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