CVE-2025-5222: international Buffer Overflow — Fix

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.

Is your site exposed to CVE-2025-5222?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.0

HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
unicode	international_components_for_unicode	< 77.1

References

Advisories & Patches

https://access.redhat.com/errata/RHSA-2025:11888 https://access.redhat.com/errata/RHSA-2025:12083 https://access.redhat.com/errata/RHSA-2025:12331 https://access.redhat.com/errata/RHSA-2025:12332 https://access.redhat.com/errata/RHSA-2025:12333 https://access.redhat.com/security/cve/CVE-2025-5222

Other References

https://bugzilla.redhat.com/show_bug.cgi?id=2368600 https://unicode-org.atlassian.net/jira/software/c/projects/ICU/issues/ICU-22957 https://lists.debian.org/debian-lts-announce/2025/06/msg00015.html

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. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2025-5222? +

CVE-2025-5222 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-5222? +

CVE-2025-5222 affects products from unicode, specifically: international_components_for_unicode. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-5222? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain …

CVE-2025-12012

A denial-of-service issue exists in 5380/5480/5580 controllers. This vulnerability could potentially allow a malicious user to write invalid file data …

CVE-2025-12011

A denial-of-service issue exists in 5370/5570 controllers. This vulnerability could potentially allow a remote user to load an invalid project, …

CVE-2024-13503

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Newtec NTC2218, NTC2250, NTC2299 on Linux, PowerPC, ARM …

CVE-2024-6199

An unauthenticated attacker on the WAN interface, with the ability to intercept Dynamic DNS (DDNS) traffic between DDNS services and …

CVE-2024-6198

The device exposes a web interface on ports TCP/3030 and TCP/9882. This web service runs lighttpd, which implements the “SNORE” …

CVE-2025-5222