Microsoft security update for CVE-2026-33055
🔗 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-2026-33055. This page also shows what EchelonGraph holds for CVE-2026-33055, 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 products19
- azl3 clamav 1.5.2-1 on Azure Linux 3.0
- azl3 clamav 1.5.2-2 on Azure Linux 3.0
- azl3 kata-containers-cc 3.15.0.aks0-7 on Azure Linux 3.0
- azl3 kata-containers-cc 3.15.0.aks0-8 on Azure Linux 3.0
- azl3 rpm-ostree 2024.4-10 on Azure Linux 3.0
- azl3 rpm-ostree 2024.4-6 on Azure Linux 3.0
- azl3 rpm-ostree 2024.4-8 on Azure Linux 3.0
- azl3 rust 1.75.0-25 on Azure Linux 3.0
- azl3 rust 1.75.0-27 on Azure Linux 3.0
- azl3 rust 1.90.0-4 on Azure Linux 3.0
- azl3 rust 1.90.0-6 on Azure Linux 3.0
- azl3 trident 0.21.0-1 on Azure Linux 3.0
- cbl2 kata-containers 3.2.0.azl2-7 on CBL Mariner 2.0
- cbl2 kata-containers-cc 3.2.0.azl2-8 on CBL Mariner 2.0
- cbl2 rpm-ostree 2022.1-8 on CBL Mariner 2.0
- cbl2 rpm-ostree 2022.1-8 on CBL-Mariner 2.0
- cbl2 rust 1.72.0-14 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: 7 updates
7 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 | 2022.1-9 |
| — | Security Update | 0.22.0-1 |
| — | Security Update | 1.72.0-16 |
| — | Security Update | 1.75.0-28 |
| — | Security Update | 1.90.0-7 |
| — | Security Update | 2024.4-10 |
| — | Security Update | 1.5.2-2 |
🧭 EchelonGraph on CVE-2026-33055
- 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
tar-rs is a tar archive reading/writing library for Rust. Versions 0.4.44 and below have conditional logic that skips the PAX size header in cases where the base header size is nonzero. As part of CVE-2025-62518, the astral-tokio-tar project was changed to correctly honor PAX size headers in the case where it was different from the base header. This is almost the inverse of the astral-tokio-tar issue. Any discrepancy in how tar parsers honor file size can be used to create archives that appear differently when unpacked by different archivers. In this case, the tar-rs (Rust tar) crate is an outlier in checking for the header size - other tar parsers (including e.g. Go archive/tar) unconditionally use the PAX size override. This can affect anything that uses the tar crate to parse archives and expects to have a consistent view with other parsers. This issue has been fixed in version 0.4.45.
Published by GitHub, Inc., the CVE Numbering Authority that assigned CVE-2026-33055, 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).