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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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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-2026-40385
MediumCVSS 4.0

In libexif through 0.6.25, an unsigned 32bit integer overflow in Nikon MakerNote handling could be used by local attackers to cause crashes or information leaks. This only affects 32bit systems.

Mariner

Affected productsazl3 libexif 0.6.24-2 on Azure Linux 3.0, cbl2 libexif 0.6.24-2 on CBL Mariner 2.0, azl3 libexif 0.6.24-3 on Azure Linux 3.0, cbl2 libexif 0.6.24-2 on CBL-Mariner 2.0
Fixed versions0.6.24-3
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-40385
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-40386
MediumCVSS 4.0

In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.

Mariner

Affected productsazl3 libexif 0.6.24-2 on Azure Linux 3.0, azl3 libexif 0.6.24-3 on Azure Linux 3.0, cbl2 libexif 0.6.24-2 on CBL Mariner 2.0, cbl2 libexif 0.6.24-2 on CBL-Mariner 2.0
Fixed versions0.6.24-3
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-40386
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-34001
HighCVSS 7.8

Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

Mariner

Affected productscbl2 xorg-x11-server 1.20.10-16 on CBL-Mariner 2.0, cbl2 xorg-x11-server 1.20.10-16 on CBL Mariner 2.0, azl3 xorg-x11-server-Xwayland 24.1.6-3 on Azure Linux 3.0, azl3 xorg-x11-server-Xwayland 24.1.6-4 on Azure Linux 3.0
Fixed versions24.1.6-4
Vendor guidance

Release Notes CBL-Mariner Releases

CVE-2026-34001
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-33999
MediumCVSS 6.6

Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

Mariner

Affected productscbl2 xorg-x11-server 1.20.10-16 on CBL-Mariner 2.0, cbl2 xorg-x11-server 1.20.10-16 on CBL Mariner 2.0, azl3 xorg-x11-server-Xwayland 24.1.6-3 on Azure Linux 3.0, azl3 xorg-x11-server-Xwayland 24.1.6-4 on Azure Linux 3.0
Fixed versions24.1.6-4
Vendor guidance

Release Notes CBL-Mariner Releases

CVE-2026-33999
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-40226
MediumCVSS 6.4

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

Mariner

Affected productsazl3 systemd 255-26 on Azure Linux 3.0, cbl2 systemd 250.3-24 on CBL Mariner 2.0, azl3 systemd 255-27 on Azure Linux 3.0, azl3 systemd 255-30 on Azure Linux 3.0
Fixed versions255-28, 255-30
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-40226
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-34757
MediumCVSS 5.1

LIBPNG has a yse-after-free in png_set_PLTE, png_set_tRNS and png_set_hIST leading to corrupted chunk data and potential heap information disclosure

Mariner

Affected productsazl3 libpng 1.6.56-1 on Azure Linux 3.0, cbl2 libpng 1.6.56-1 on CBL Mariner 2.0, cbl2 libpng 1.6.56-1 on CBL-Mariner 2.0
Fixed versions1.6.57-1
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-34757
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-40225
MediumCVSS 6.4

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

Mariner

Affected productscbl2 systemd 250.3-24 on CBL Mariner 2.0, azl3 systemd 255-27 on Azure Linux 3.0, cbl2 systemd 250.3-24 on CBL-Mariner 2.0, azl3 systemd 255-26 on Azure Linux 3.0
Fixed versions255-28, 255-30
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2026-40225
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2025-38436
HighCVSS 7.0

drm/scheduler: signal scheduled fence when kill job

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the mos...

Affected productsazl3 kernel 6.6.96.1-1 on Azure Linux 3.0, cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
Fixed versions6.6.96.1-1
Vendor guidance

CBL-Mariner Releases Release Notes

CVE-2025-38436
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-41066
HighCVSS 7.5

lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files

Mariner

Affected productscbl2 python-lxml 4.9.1-1 on CBL-Mariner 2.0, azl3 python-lxml 4.9.3-1 on Azure Linux 3.0, cbl2 python-lxml 4.9.1-1 on CBL Mariner 2.0, azl3 python-lxml 4.9.3-2 on Azure Linux 3.0
Fixed versions4.9.3-2
Vendor guidance

Release Notes CBL-Mariner Releases

CVE-2026-41066
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2025-38426
MediumCVSS 5.5

drm/amdgpu: Add basic validation for RAS header

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the mos...

Affected productsazl3 kernel 6.6.96.2-1 on Azure Linux 3.0, azl3 kernel 6.6.96.2-2 on Azure Linux 3.0, azl3 kernel 6.6.104.2-4 on Azure Linux 3.0, azl3 kernel 6.6.112.1-2 on Azure Linux 3.0
Vendor guidance

Release Notes

CVE-2025-38426
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2025-38408
MediumCVSS 5.5

genirq/irq_sim: Initialize work context pointers properly

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the mos...

Affected productscbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1
Vendor guidance

Release Notes

CVE-2025-38408
Read the vendor advisory Watch this product
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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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