How severe is CVE-2025-5222?

CVE-2025-5222 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-5222 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5222?

CVE-2025-5222 affects Unicode International Components For Unicode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-5222?

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-2025-5222 have an EU (EUVD) identifier?

Yes. CVE-2025-5222 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16306.

When was CVE-2025-5222 published?

CVE-2025-5222 was published on 2025-05-27 and last updated on 2026-06-30.

CVE-2025-5222

CVE-2025-5222 is a high-severity vulnerability in Unicode International Components For Unicode with a CVSS 3.x base score of 7.0. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.0)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16306
Weakness: CWE-120
Affected product: Unicode International Components For Unicode
Published: 2025-05-27
Last modified: 2026-06-30

Description

A stack buffer overflow was found in Internationl components for unicode (ICU ). While running the genrb binary, the 'subtag' struct overflowed at the SRBRoot::addTag function. This issue may lead to memory corruption and local arbitrary code execution.

Frequently asked questions

What is CVE-2025-5222?: A stack buffer overflow was found in Internationl components for unicode (ICU ). While running the genrb binary, the 'subtag' struct overflowed at the SRBRoot::addTag function. This issue may lead to memory corruption and local arbitrary code execution.
How severe is CVE-2025-5222?: CVE-2025-5222 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-5222 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5222?: CVE-2025-5222 affects Unicode International Components For Unicode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-5222?: 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-2025-5222 have an EU (EUVD) identifier?: Yes. CVE-2025-5222 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16306.
When was CVE-2025-5222 published?: CVE-2025-5222 was published on 2025-05-27 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:unicode:international_components_for_unicode:*:*:*:*:*:*:*:*

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