Buffer Overflow Vulnerability in International Components for Unicode by Red Hat
CVE-2025-5222

7HIGH

Key Information:

Vendor

Unicode

Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.0 Update Services For SAP Solutions
Vendor
CVE Published:
27 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5222?

A stack buffer overflow has been identified in the International Components for Unicode (ICU) library. Specifically, this vulnerability is triggered during the execution of the genrb binary, where an overflow occurs within the 'subtag' structure at the SRBRoot::addTag function. If exploited, this vulnerability could result in memory corruption and enable local attackers to execute arbitrary code on the affected system.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

icu-74-debian
Created by berkley4

References

https://access.redhat.com/errata/RHSA-2025:11888
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12083
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:12331
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-5222 : Buffer Overflow Vulnerability in International Components for Unicode by Red Hat