Buffer overflow in Unicode International Components For
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.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (23.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Unicode International_components_for_unicode
- Red Hat Enterprise Linux 10 — versions 0:74.2-5.el10_0
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:67.1-10.el9_6
- Red Hat Enterprise Linux 9.0 Update Services For Sap Solutions — versions 0:67.1-10.el9_0
- Red Hat Enterprise Linux 9.2 Update Services For Sap Solutions — versions 0:67.1-10.el9_2
- Red Hat Enterprise Linux 9.4 Extended Update Support — versions 0:67.1-10.el9_4
- Red Hat In-vehicle Operating System 1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking)
- secalert@redhat.com
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2025-5222?
- CVE-2025-5222 is a high-severity vulnerability in Unicode International Components For, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.0/10. Published 2025-05-27.
- How severe is CVE-2025-5222?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2025-5222 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.