Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 43 fixed, 22 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial of Service. When a CMS EnvelopedData message that uses KeyTransportRecipientInfo with RSA-OAEP encryption is processed, the optional parameters field of RSA-OAEP SourceFunc algorithm identifier is examined without checking for its presence. This results in a NULL pointer dereference if the field is missing. Applications and services that call CMS_decrypt() on untrusted input (e.g., S/MIME processing or CMS-based protocols) are vulnerable. The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code 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
- Partial
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 | 3.6.0 to before 3.6.2; 3.5.0 to before 3.5.6; 3.4.0 to before 3.4.5; 3.3.0 to before 3.3.7; 3.0.0 to before 3.0.20; 1.1.1 to before 1.1.1zg; 1.0.2 to before 1.0.2zp | 3.6.2, 3.5.6, 3.4.5, 3.3.7, 3.0.20, 1.1.1zg, 1.0.2zp | Patch available | CNA |
- OpenSSL VendorOpenSSL Affected 3.6.0 to before 3.6.2; 3.5.0 to before 3.5.6; 3.4.0 to before 3.4.5; 3.3.0 to before 3.3.7; 3.0.0 to before 3.0.20; 1.1.1 to before 1.1.1zg; 1.0.2 to before 1.0.2zp Fixed in 3.6.2, 3.5.6, 3.4.5, 3.3.7, 3.0.20, 1.1.1zg, 1.0.2zp Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | 1.0.2 to before 1.0.2zp; 1.1.1 to before 1.1.1zg; 3.0.0 to before 3.0.20; 3.3.0 to before 3.3.7; 3.4.0 to before 3.4.5; 3.5.0 to before 3.5.6; 3.6.0 to before 3.6.2 | Vulnerable | OpenSSL |
- cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* Versions 1.0.2 to before 1.0.2zp; 1.1.1 to before 1.1.1zg; 3.0.0 to before 3.0.20; 3.3.0 to before 3.3.7; 3.4.0 to before 3.4.5; 3.5.0 to before 3.5.6; 3.6.0 to before 3.6.2 Vulnerable ·OpenSSL
Remediation
- Fix · CNA OpenSSL (OpenSSL) Fixed in 3.6.2, 3.5.6, 3.4.5, 3.3.7, 3.0.20, 1.1.1zg, 1.0.2zp
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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/20260407.txt
7 records Highest priority Priority MEDIUM 6 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-22661 Out-of-bounds Read in AES-CFB-128 on X86-64 with AVX-512 SupportPriority MEDIUM 46
- TI-2026-24345 Heap Buffer Overflow in Hexadecimal ConversionPriority MEDIUM 42
- TI-2026-24346 Incorrect Failure Handling in RSA KEM RSASVE EncapsulationPriority MEDIUM 41
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Confidential Cluster Operator | Affected | No fix yet |
| Confidential Compute Attestation | Affected | No fix planned: Will not fix |
| Lightspeed Core | Affected | No fix yet |
| Migration Toolkit for Applications 8 | Affected | No fix planned: Will not fix |
| Multicluster Engine for Kubernetes | Affected | No fix yet |
| OpenShift Lightspeed | Affected | No fix planned: Will not fix |
| Pen Drive Powered by Red Hat Lightspeed | Affected | No fix yet |
| Red Hat 3scale API Management Platform 2 | Affected | No fix planned: Will not fix |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Advanced Cluster Security 4 | Affected | No fix planned: Will not fix |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet |
| Red Hat Connectivity Link 1 | Affected | No fix yet |
| Red Hat Discovery 2 | Affected | No fix yet |
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat JBoss Core Services | Affected | No fix planned: Will not fix |
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| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat Trusted Profile Analyzer | Affected | No fix yet |
| Cert Manager support for Red Hat OpenShift release 1.17 | Fixed | RHSA-2026:82304, RHSA-2026:82322, RHSA-2026:82888 |
| Cert Manager support for Red Hat OpenShift release 1.18 | Fixed | RHSA-2026:82347, RHSA-2026:82354, RHSA-2026:82372, RHSA-2026:82857 |
| Cert Manager support for Red Hat OpenShift release 1.20 | Fixed | RHSA-2026:72502 |
| Cost Management 4 | Fixed | RHSA-2026:27998 |
| Red Hat Ansible Automation Platform 2.6 | Fixed | RHSA-2026:24866 |
| Red Hat Discovery 2 | Fixed | RHSA-2026:14937, RHSA-2026:29197 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:22314, RHSA-2026:39297 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:22315 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:22312, RHSA-2026:22313 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:47096 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:44480 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:36217 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:39012, RHSA-2026:84572 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:39009, RHSA-2026:84573 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:71542 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:35869, RHSA-2026:83617 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:47096 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:44480 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:36217 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:22314 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:38503 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:22312 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2026:43513 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2026:38804 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.8) | Fixed | RHSA-2026:38805 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2026:84572 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.4) | Fixed | RHSA-2026:84573 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2026:71542 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:83617 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:43513 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:38804 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.8) | Fixed | RHSA-2026:38805 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:39297 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:58563 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:58563 |
| Red Hat Hardened Images | Fixed | RHSA-2026:14217, RHSA-2026:7261 |
| Red Hat Insights proxy 1.5 | Fixed | RHSA-2026:22634 |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:87410 |
| Red Hat OpenShift AI 3.0 | Fixed | RHSA-2026:91206, RHSA-2026:91219, RHSA-2026:91232, RHSA-2026:91236, RHSA-2026:91243, RHSA-2026:94459, RHSA-2026:94476 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:91217, RHSA-2026:91218, RHSA-2026:91233, RHSA-2026:91234, RHSA-2026:91235, RHSA-2026:91241, RHSA-2026:91244, RHSA-2026:91245, RHSA-2026:91248, RHSA-2026:94468 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:91202, RHSA-2026:91204, RHSA-2026:91207, RHSA-2026:91224, RHSA-2026:91237, RHSA-2026:91238, RHSA-2026:91242, RHSA-2026:91246, RHSA-2026:91249, RHSA-2026:94474 |
| Red Hat OpenShift Container Platform 4.12 | Fixed | RHSA-2026:59831 |
| Red Hat Update Infrastructure 5 | Fixed | RHSA-2026:26319, RHSA-2026:58981 |
Not affected: 42 products
- Confidential Compute Attestation
- Cost Management 4
- Logging Subsystem for Red Hat OpenShift
- OpenShift Service Mesh 3
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Ansible Automation Platform 2
- Red Hat Ansible Automation Platform 2.6
- Red Hat Directory Server 11
- Red Hat Directory Server 12
- Red Hat Directory Server 13
- Red Hat Discovery 2
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux AppStream AUS (v.8.6)
- Red Hat Enterprise Linux AppStream E4S (v.9.2)
- Red Hat Enterprise Linux AppStream E4S (v.9.4)
- Red Hat Enterprise Linux AppStream EUS (v. 10.0)
- Red Hat Enterprise Linux AppStream EUS (v.9.6)
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
- Red Hat Enterprise Linux BaseOS (v. 8)
- Red Hat Enterprise Linux BaseOS AUS (v.8.4)
- Red Hat Enterprise Linux BaseOS AUS (v.8.6)
- Red Hat Enterprise Linux BaseOS E4S (v.8.8)
- Red Hat Enterprise Linux BaseOS E4S (v.9.2)
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
- Red Hat Enterprise Linux BaseOS EUS (v.9.6)
- Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
- Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
- Red Hat Enterprise Linux BaseOS TUS (v.8.8)
- Red Hat Enterprise Linux Server (v. 7 ELS)
- Red Hat Enterprise Linux Server Optional (v. 7 ELS)
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Update Service
- Red Hat Quay 3
- Red Hat Satellite 6
- Red Hat Trusted Artifact Signer
- Red Hat Update Infrastructure 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28390
- 2026-10-03 Alias added: GHSA-fgpp-q3px-3xhc
- 2026-10-09 Affected versions changed · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82304 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82322 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82372 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82354 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82347 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82857 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82888 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:83617 · Red Hat
- 2026-10-16 Fix available: Cert Manager support for Red Hat OpenShift release 1.17, Cert Manager support for Red Hat OpenShift release 1.18, Red Hat Enterprise Linux BaseOS EUS (v.9.6) · Red Hat
- 2026-10-19 Fix available: RHSA-2026:84572 · Red Hat
- 2026-10-19 Fix available: Red Hat Enterprise Linux BaseOS E4S (v.9.2) · Red Hat
- 2026-10-19 Fix available: RHSA-2026:84573 · Red Hat
- 2026-10-20 Fix available: Red Hat Enterprise Linux BaseOS E4S (v.9.4) · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
- 2026-10-23 Fix available: Red Hat OpenShift AI 2.25 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91202 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91204 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91206 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91207 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91217 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91219 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91224 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91233 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91232 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91218 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91235 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91234 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91241 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91237 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91238 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91242 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91236 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91245 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91246 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91243 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91244 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91248 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91249 · Red Hat
- 2026-10-30 Fix available: Red Hat OpenShift AI 3.0, Red Hat OpenShift AI 3.4, Red Hat OpenShift AI 3.5 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-03 Fix available: RHSA-2026:94459 · Red Hat
- 2026-11-03 Fix available: RHSA-2026:94468 · Red Hat
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94474 · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94476 · Red Hat
- 2026-11-04 Affected versions changed · Red Hat
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-2026-28390 · CVE Program
- CVE-2026-28390 · NVD
- FIRST EPSS
- GHSA-fgpp-q3px-3xhc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-28390 · 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