Microsoft security update for CVE-2026-28387
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-28387. This page also shows what EchelonGraph holds for CVE-2026-28387, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products13
- azl3 nodejs24 24.13.0-3 on Azure Linux 3.0
- azl3 nodejs24 24.14.1-1 on Azure Linux 3.0
- azl3 openssl 3.3.5-4 on Azure Linux 3.0
- azl3 openssl 3.3.5-5 on Azure Linux 3.0
- azl3 qemu 9.1.0-1 on Azure Linux 3.0
- azl3 rust 1.75.0-27 on Azure Linux 3.0
- azl3 rust 1.90.0-6 on Azure Linux 3.0
- cbl2 edk2 20230301gitf80f052277c8-47 on CBL Mariner 2.0
- cbl2 edk2 20230301gitf80f052277c8-47 on CBL-Mariner 2.0
- cbl2 hvloader 1.0.1-18 on CBL Mariner 2.0
- cbl2 hvloader 1.0.1-18 on CBL-Mariner 2.0
- cbl2 openssl 1.1.1k-39 on CBL Mariner 2.0
- cbl2 openssl 1.1.1k-39 on CBL-Mariner 2.0
✅ Updates Microsoft lists: 4 updates
4 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 3.3.7-2 |
| — | Security Update | — |
| — | Security Update | 1.1.1k-40 |
| — | Security Update | 3.3.7-1 |
🧭 EchelonGraph on CVE-2026-28387
- EchelonGraph score
- 8.1 HIGH
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code. However, the issue only affects clients that make use of TLSA records with both the PKIX-TA(0/PKIX-EE(1) certificate usages and the DANE-TA(2) certificate usage. By far the most common deployment of DANE is in SMTP MTAs for which RFC7672 recommends that clients treat as 'unusable' any TLSA records that have the PKIX certificate usages. These SMTP (or other similar) clients are not vulnerable to this issue. Conversely, any clients that support only the PKIX usages, and ignore the DANE-TA(2) usage are also not vulnerable. The client would also need to be communicating with a server that publishes a TLSA RRset with both types of TLSA records. No FIPS modules are affected by this issue, the problem code is outside the FIPS module boundary.
Published by OpenSSL Software Foundation, the CVE Numbering Authority that assigned CVE-2026-28387, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).