Out-of-bounds read & write in RFC 3211 KEK Unwrap
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 56 fixed, 5 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
Issue summary: An application trying to decrypt CMS messages encrypted using password based encryption can trigger an out-of-bounds read and write. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service for an application. The out-of-bounds write can cause a memory corruption which can have various consequences including a Denial of Service or Execution of attacker-supplied code. Although the consequences of a successful exploit of this vulnerability could be severe, the probability that the attacker would be able to perform it is low. Besides, password based (PWRI) encryption support in CMS messages is very rarely used. For that reason the issue was assessed as Moderate severity according to our Security Policy. The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as the CMS implementation is outside the OpenSSL FIPS module boundary.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenSSL | OpenSSL | 3.5.0 to before 3.5.4; 3.4.0 to before 3.4.3; 3.3.0 to before 3.3.5; 3.2.0 to before 3.2.6; 3.0.0 to before 3.0.18; 1.1.1 to before 1.1.1zd; 1.0.2 to before 1.0.2zm | 3.5.4, 3.4.3, 3.3.5, 3.2.6, 3.0.18, 1.1.1zd, 1.0.2zm | Patch available | CNA |
- OpenSSL VendorOpenSSL Affected 3.5.0 to before 3.5.4; 3.4.0 to before 3.4.3; 3.3.0 to before 3.3.5; 3.2.0 to before 3.2.6; 3.0.0 to before 3.0.18; 1.1.1 to before 1.1.1zd; 1.0.2 to before 1.0.2zm Fixed in 3.5.4, 3.4.3, 3.3.5, 3.2.6, 3.0.18, 1.1.1zd, 1.0.2zm Patch available CNA
Remediation
- Fix · CNA OpenSSL (OpenSSL) Fixed in 3.5.4, 3.4.3, 3.3.5, 3.2.6, 3.0.18, 1.1.1zd, 1.0.2zm
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Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
OpenSSL — openssl-library.org/news/secadv/20250930.txt
3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2025-08464 Out-of-bounds read in HTTP client no_proxy handlingPriority LOW 30
- TI-2025-08463 Timing side-channel in SM2 algorithm on 64 bit ARMPriority LOW 29
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Engine for Kubernetes | Affected | No fix yet |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Satellite 6 | Affected | No fix yet |
| Red Hat Satellite Client | Affected | No fix yet |
| Cost Management 4 | Fixed | RHSA-2025:22428 |
| Red Hat AI Inference Server 3.2 | Fixed | RHSA-2025:23078, RHSA-2025:23079, RHSA-2025:23080, RHSA-2025:23202, RHSA-2025:23204, RHSA-2025:23205, RHSA-2025:23209, RHSA-2025:23449, RHSA-2026:3461, RHSA-2026:3462 |
| Red Hat Ceph Storage 7 | Fixed | RHSA-2025:22529 |
| Red Hat Ceph Storage 8 | Fixed | RHSA-2025:22548, RHSA-2026:1652 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2026:3164 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:2771 |
| Red Hat Discovery 2 | Fixed | RHSA-2025:21994 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2025:21248, RHSA-2026:18320 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:36721 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:21255, RHSA-2026:2776 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:35846 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2026:1349 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:0794 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2025:22794, RHSA-2026:65132 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:21562, RHSA-2026:3164 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2025:21174, RHSA-2026:2771 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:35846 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2025:21248 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:0337 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2025:21255 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2026:0887 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2026:1475 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2026:0714 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2026:0714 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.8) | Fixed | RHSA-2026:0602 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.0) | Fixed | RHSA-2026:1349 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2026:0794 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2025:22794 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2025:21562 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2025:21174 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:1475 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2026:0714 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.8) | Fixed | RHSA-2026:0602 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:18320 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:2776 |
| Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | Fixed | RHSA-2026:65132 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:1720 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:1720 |
| Red Hat Hardened Images | Fixed | RHSA-2026:7261 |
| Red Hat Insights proxy 1.5 | Fixed | RHSA-2025:22868 |
| Red Hat JBoss Core Services 2.4.62.SP3 | Fixed | RHSA-2026:2995 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2026:2994 |
| Red Hat OpenShift Container Platform 4.12 | Fixed | RHSA-2026:3861 |
| Red Hat OpenShift Container Platform 4.13 | Fixed | RHSA-2026:3415 |
| Red Hat OpenShift Container Platform 4.14 | Fixed | RHSA-2026:2974 |
| Red Hat OpenShift Container Platform 4.15 | Fixed | RHSA-2026:67857 |
| Red Hat OpenShift Container Platform 4.16 | Fixed | RHSA-2026:62549 |
| Red Hat OpenShift Container Platform 4.17 | Fixed | RHSA-2026:0702 |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:0332 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:0674 |
| Red Hat OpenShift Container Platform 4.20 | Fixed | RHSA-2026:0420 |
| Red Hat Satellite 6.16 for RHEL 8 | Fixed | RHSA-2026:50223 |
| Red Hat Satellite 6.16 for RHEL 9 | Fixed | RHSA-2026:50223 |
| Red Hat Satellite 6.17 for RHEL 9 | Fixed | RHSA-2026:50222 |
| Red Hat Satellite 6.18 for RHEL 9 | Fixed | RHSA-2026:50263 |
| Red Hat Satellite 6.19 for RHEL 9 | Fixed | — |
Not affected: 19 products
- Cost Management 4
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Ceph Storage 7
- Red Hat Ceph Storage 8
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux AppStream E4S (v.9.0)
- Red Hat Enterprise Linux AppStream E4S (v.9.2)
- Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- Red Hat Enterprise Linux BaseOS E4S (v.9.2)
- Red Hat JBoss Core Services on RHEL 7 Server
- Red Hat JBoss Core Services on RHEL 8
- Red Hat Satellite 6
- Red Hat Satellite 6.16 for RHEL 8
- Red Hat Satellite 6.16 for RHEL 9
- Red Hat Satellite 6.17 for RHEL 9
- Red Hat Satellite 6.18 for RHEL 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9230
- 2026-10-07 Fix available: Red Hat Satellite 6.19 for RHEL 9 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:2995 · Red Hat
- 2026-10-09 Fix available: Red Hat JBoss Core Services 2.4.62.SP3 · Red Hat
- 2026-11-06 CVSS score changed · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
- 2026-11-06 Priority changed: LOW → MEDIUM
References
More OpenSSL vulnerabilities
- TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
Sources
- CVE-2025-9230 · CVE Program
- CVE-2025-9230 · NVD
- FIRST EPSS
- CVE-2025-9230 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences