Remote Code Execution in Microsoft Dynamics 365 On-Premises
CVE-2026-42898 is a critical code injection vulnerability in Microsoft Dynamics 365 (on-premises). Microsoft describes the flaw as improper control of generation of code (CWE-94). Available reporting indicates the issue can be exploited by an authorized, low-privileged attacker over the network by modifying the saved state of a process session in Dynamics CRM, causing the server to process malicious data and unintentionally execute attacker-controlled code. The vulnerability is remotely reachable, requires no user interaction, and has a scope change, meaning successful exploitation can impact resources beyond the originally vulnerable component.
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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.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Microsoft Dynamics 365 on-premises のリモートコード実行脆弱性。CVSS 基本値が 9.8 以上で、認証やユーザー操作なしで悪用可能とされる。公開前の悪用や一般公開はなかったが、早急なリスク評価と更新適用が推奨されている。
An unauthenticated remote code execution vulnerability affecting Dynamics 365 on-premises.
An unauthenticated remote code execution vulnerability affecting Dynamics 365 on-premises.
A critical code injection remote code execution vulnerability in Microsoft Dynamics 365 On-Premises with scope change, allowing an authenticated user to impact resources beyond the vulnerable component.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.