Windows Print Spooler Use-After-Free Remote Code Execution
CVE-2026-23669 is a use-after-free vulnerability in Windows Print Spooler components. The available reporting describes it as an authenticated remote code execution flaw in the Windows print queue / Print Spooler service, with behavior compared to the 2021 PrintNightmare class of issues. Exploitation is reported to be possible when an authorized or authenticated attacker sends specially crafted network messages or network traffic to a system running the Print Spooler service, triggering memory corruption and allowing injection and execution of malicious code. No user interaction is required based on the provided content.
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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
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Print Spooler remote code execution vulnerability where an authenticated attacker can send specially crafted network traffic to trigger memory corruption and potentially execute code on the target system.
An authenticated remote code execution vulnerability in the Windows Print Spooler service.
A remote code execution vulnerability in the Windows print queue/spooler-like component, similar in behavior to PrintNightmare, allowing network-based code execution by a privileged attacker without user interaction.
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.