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Vendor advisories

Microsoft Security Response Center

Browse 15,972 advisories from this official source. Search by product, CVE, severity, or advisory ID.

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All vendor sources Official source

15,972 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

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Microsoft Security Response CenterCVE-2026-32778
LowCVSS 2.9

libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.

Mariner

Affected productsazl3 expat 2.6.4-4 on Azure Linux 3.0, cbl2 expat 2.6.4-4 on CBL Mariner 2.0, azl3 cmake 3.30.3-12 on Azure Linux 3.0, cbl2 cmake 3.21.4-21 on CBL Mariner 2.0
Fixed versions2.6.4-5
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-32778
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-6383
MediumCVSS 5.4

Kubevirt: kubevirt: unauthorized subresource access due to improper rbac evaluation

Mariner

Affected productsazl3 kubevirt 1.7.1-2 on Azure Linux 3.0, azl3 kubevirt 1.7.1-7 on Azure Linux 3.0, azl3 kubevirt 1.7.1-8 on Azure Linux 3.0
Fixed versions1.8.4-1
Vendor guidance

See the Microsoft Security Update Guide for the update that applies to your product.

CVE-2026-6383
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-55653
MediumCVSS 4.3

Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

Mariner

Affected productsazl3 openssh 9.8p1-9 on Azure Linux 3.0, azl3 openssh 9.8p1-10 on Azure Linux 3.0, azl3 openssh 9.8p1-6 on Azure Linux 3.0, azl3 openssh 9.8p1-8 on Azure Linux 3.0
Vendor guidance

Release Notes

CVE-2026-55653
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-32776
MediumCVSS 4.0

libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.

Mariner

Affected productsazl3 expat 2.6.4-4 on Azure Linux 3.0, cbl2 expat 2.6.4-4 on CBL Mariner 2.0, azl3 cmake 3.30.3-12 on Azure Linux 3.0, cbl2 cmake 3.21.4-21 on CBL Mariner 2.0
Fixed versions2.6.4-5
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-32776
Read the vendor advisory Watch this product
Before you act

Start with the vendor's bulletin.

We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.

Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

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