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CVE-2025-5222
high
CVSS 7.0
Vulnerability in unicode (CVE-2025-5222)
Summary
vulnerability in unicode (CVE-2025-5222). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-5222** has been found in unicode.
Successful exploitation can lead to full system takeover. CVSS score: 7.0/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "unicode CVE-2025-5222" on the vendor's site.
CVE-2025-5222 (unicode) — CWE-120 / CVSS v3 7.0
Attack vector: local / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-120) exists in unicode.
📍 Affected scope
unicode — .
🔥 Severity
Severity: High (CVSS 7.0/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'unicode' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'unicode' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `unicode` を grep し、稼働しているサービス・バージョンを把握する。
-
7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://access.redhat.com/errata/RHSA-2025:11888
- web https://access.redhat.com/errata/RHSA-2025:12083
- web https://access.redhat.com/errata/RHSA-2025:12331
- web https://access.redhat.com/errata/RHSA-2025:12332
- web https://access.redhat.com/errata/RHSA-2025:12333
- web https://access.redhat.com/security/cve/CVE-2025-5222
- web https://bugzilla.redhat.com/show_bug.cgi?id=2368600
- web https://unicode-org.atlassian.net/jira/software/c/projects/ICU/issues/ICU-22957
- web https://lists.debian.org/debian-lts-announce/2025/06/msg00015.html
- web https://cert-portal.siemens.com/productcert/html/ssa-585531.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-5222
- web https://github.com/advisories/GHSA-wv79-2fc4-v4hj
- web https://access.redhat.com/errata/RHSA-2026:54581
- web https://access.redhat.com/errata/RHSA-2026:54544
- web https://access.redhat.com/errata/RHSA-2026:54553