CVE-2025-5222

HIGH

International Components for Unicode < 77.1 - Buffer Overflow in genrb Binary

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-5222. PoCs published by berkley4.

AI-analyzed exploit summary This repository provides Debian build files and a patch for ICU 74.2 to address CVE-2025-5222. It includes a test file demonstrating Unicode string handling but does not contain an exploit. The focus is on building patched Debian packages.

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.

Exploits (1)

nomisec WRITEUP 1 stars
by berkley4 · poc
https://github.com/berkley4/icu-74-debian

This repository provides Debian build files and a patch for ICU 74.2 to address CVE-2025-5222. It includes a test file demonstrating Unicode string handling but does not contain an exploit. The focus is on building patched Debian packages.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: ICU 74.2
No auth needed
Prerequisites: Debian build environment · ICU 74.2 source code
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (9)

Core 9
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:11888
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:12083
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:12331
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:12332
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:12333
Vendor Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2025-5222
Issue Tracking issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2368600

Scores

CVSS v3 7.0
EPSS 0.0030
EPSS Percentile 21.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-120
Status published
Products (10)
Red Hat/Red Hat Enterprise Linux 10 0:74.2-5.el10_0
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9 0:67.1-10.el9_6
Red Hat/Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:67.1-10.el9_0
Red Hat/Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:67.1-10.el9_2
Red Hat/Red Hat Enterprise Linux 9.4 Extended Update Support 0:67.1-10.el9_4
Red Hat/Red Hat OpenShift Container Platform 4
unicode/international_components_for_unicode < 77.1
Published May 27, 2025
Tracked Since Feb 18, 2026