Microsoft security update for CVE-2026-41676
🔗 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-2026-41676. This page also shows what EchelonGraph holds for CVE-2026-41676, 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 products8
- azl3 clamav 1.5.2-1 on Azure Linux 3.0
- azl3 rpm-ostree 2024.4-8 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 rpm-ostree 2022.1-8 on CBL Mariner 2.0
- cbl2 rpm-ostree 2022.1-8 on CBL-Mariner 2.0
- cbl2 rust 1.72.0-15 on CBL Mariner 2.0
- cbl2 rust 1.72.0-15 on CBL-Mariner 2.0
✅ Updates Microsoft lists: 1 update
1 row: 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 | — |
🧭 EchelonGraph on CVE-2026-41676
- EchelonGraph score
- 7.5 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
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive (and PkeyCtxRef::derive) sets len = buf.len() and passes it as the in/out length to EVP_PKEY_derive, relying on OpenSSL to honor it. On OpenSSL 1.1.x, X25519, X448, DH and HKDF-extract ignore the incoming *keylen, unconditionally writing the full shared secret (32/56/prime-size bytes). A caller passing a short slice gets a heap/stack overflow from safe code. OpenSSL 3.x providers do check, so this only impacts older OpenSSL. This vulnerability is fixed in 0.10.78.
Published by GitHub, Inc., the CVE Numbering Authority that assigned CVE-2026-41676, 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).