ICU 76.0.1 SRBRoot::addTag stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in ICU 76.0.1 and classified as critical. The affected element is the function SRBRoot::addTag. This manipulation causes stack-based overflow. This vulnerability is tracked as CVE-2025-5222. No exploit exists.

Detailsinfo

A vulnerability was found in ICU 76.0.1. It has been declared as critical. Affected by this vulnerability is the function SRBRoot::addTag. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2025-5222 since 05/26/2025. The exploitation appears to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/29/2025).

The vulnerability scanner Nessus provides a plugin with the ID 238369 (Fedora 42 : mingw-icu (2025-879f3d7695)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (238369), EUVD (EUVD-2025-16306) and CERT Bund (WID-SEC-2025-1406). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Open Source International Components for Unicode (icu)

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.0
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 238369
Nessus Name: Fedora 42 : mingw-icu (2025-879f3d7695)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/26/2025 Advisory disclosed
05/26/2025 +0 days CVE reserved
05/26/2025 +0 days VulDB entry created
07/29/2025 +63 days VulDB entry last update

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2025-5222 (🔒)
GCVE (CVE): GCVE-0-2025-5222
GCVE (VulDB): GCVE-100-310327
EUVD: 🔒
CERT Bund: WID-SEC-2025-1406 - International Components for Unicode (icu): Schwachstelle ermöglicht Codeausführung

Entryinfo

Created: 05/26/2025 22:27
Updated: 07/29/2025 00:57
Changes: 05/26/2025 22:27 (50), 06/12/2025 16:05 (1), 06/13/2025 10:26 (2), 06/16/2025 01:37 (13), 07/29/2025 00:57 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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