CVE-2026-28389
High · 7.5CVSS
7.5
EPSS
0.8%
Published
Apr 7, 2026
CISA due date
—
The record
Issue summary: During processing of a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo 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 KeyAgreeRecipientInfo is processed, the optional parameters field of KeyEncryptionAlgorithmIdentifier 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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Module for Legacy 15 SP7 | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | openssl-3 | 0 | 3.1.4-150600.5.45.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | openssl-3 | 0 | 3.1.4-150600.5.45.1 |
| openSUSE:Leap 15.6 | openssl-1_0_0 | 0 | 1.0.2p-150000.3.105.1 |
| openSUSE:Leap 15.6 | openssl-3 | 0 | 3.1.4-150600.5.45.1 |
| openSUSE:Leap 16.0 | openssl-3 | 0 | 3.5.0-160000.7.1 |
| openSUSE:Tumbleweed | openssl-3 | 0 | 3.5.3-4.1 |
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