CVE-2025-5222: Internationl components · Stack Buffer Overflow Was Found
Affects icuSource GCVE Database
Not known to be exploited · CVSS 7.0 High.
Data as of 9 Nov 2026, 14:34 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.0 |
|---|
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 27 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10icupkg:deb/ubuntu/icu?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSicupkg:deb/ubuntu/icu?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSicupkg:deb/ubuntu/icu?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSicupkg:deb/ubuntu/icu?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSicupkg:deb/ubuntu/icu?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Ubuntu Pro 16.04 LTSicupkg:deb/ubuntu/icu?arch=source&distro=esm-infra/xenialOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, restrict local access to systems running affected ICU versions and avoid running untrusted code that invokes the genrb binary.
Description
A stack buffer overflow vulnerability exists in the International Components for Unicode (ICU) library. The flaw occurs in the genrb binary within the SRBRoot::addTag function, where the 'subtag' struct overflows. This vulnerability can lead to memory corruption and potentially allow local arbitrary code execution. It affects multiple specific versions of ICU as listed. The vulnerability has a high severity rating with a CVSS score of 7.0.