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CVE-2025-21122 is a critical integer underflow vulnerability in Adobe Photoshop Desktop affecting version 25.12 and earlier in the 2024 release line and version 26.1 and earlier in the 2025 release line on Windows and macOS. The flaw is classified as an Integer Underflow (Wrap or Wraparound), where arithmetic on an integer value can produce an unexpectedly small result and lead to unsafe memory handling during processing of a crafted file. A remote, unauthenticated attacker can trigger the issue by convincing a user to open a specially crafted malicious file in Photoshop. Successful exploitation can result in arbitrary code execution in the context of the current user.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical integer underflow vulnerability in Adobe Photoshop that can enable malicious code execution via a specially crafted file.
A critical arbitrary code execution vulnerability in Adobe Photoshop caused by an integer underflow.
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.