High

Azure DevOps Information Disclosure Vulnerability

IdentifiersCVE-2026-42826CWE-200· Exposure of Sensitive Information…

CVE-2026-42826 is an information disclosure vulnerability affecting the Azure DevOps hosted service. Microsoft describes the issue as an exposure of sensitive information to an unauthorized actor that allows disclosure of information over a network. Available source material indicates the issue is associated with the Azure DevOps service itself rather than customer-managed software, including the tag "exclusively-hosted-service." The published weakness mapping is CWE-200. No further public technical detail about the specific vulnerable component, code path, or function has been provided in the supplied content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthorized remote attacker to obtain sensitive information from Azure DevOps over the network. The supplied CVSS v3.1 vector is AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, and the advisory material states high confidentiality impact with scope changed; the same source material also lists high integrity and availability impact, but the narrative description specifically confirms information disclosure. Publicly available detail in the provided content does not explain how integrity or availability would be affected beyond the CVSS metadata.

Mitigation

If you can’t patch tonight, do this now.

No customer-side mitigation is required. Microsoft states the vulnerability has already been fully mitigated in the Azure DevOps service and published the CVE for transparency.

Remediation

Patch, then assume compromise.

No customer remediation action is required according to Microsoft. The issue was already fully mitigated by Microsoft in the Azure DevOps service before or at the time of disclosure. Because this is described as an exclusively hosted service issue, remediation was performed service-side by Microsoft rather than through a customer-applied patch.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Microsoft CorporationAzure Devopsapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

15 SOURCESView more in app

the hacker newsNews

May 13, 2026

Microsoft Patches 138 Vulnerabilities, Including DNS and Netlogon RCE Flaws

An information disclosure vulnerability in Azure DevOps allowing unauthorized disclosure of information over a network.

May 13, 2026

Doozy of a Patch Tuesday includes 30 critical Microsoft CVEs

An information disclosure vulnerability in Azure DevOps. Microsoft states it has already been fully mitigated on the service side, so users do not need to take action.

sophos threat researchNews

May 13, 2026

May’s Patch Tuesday hauls out 132 CVEs | SOPHOS

An Azure DevOps information disclosure vulnerability with a CVSS base score of 10.0.

sophos blogNews

May 13, 2026

May’s Patch Tuesday hauls out 132 CVEs | SOPHOS

An Azure DevOps information disclosure vulnerability with a CVSS base score of 10.0.

+1 more in the timeline

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity10

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2026-42826

NVD

nvd.nist.gov/vuln/detail/CVE-2026-42826

MITRE CWE · CWE-200

Exposure of Sensitive Information to an…

Vendor Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42826