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CVE-2023-41990 is an Apple FontParser vulnerability in the handling of font files that can lead to arbitrary code execution when a crafted font is processed. Apple stated the issue was addressed through improved handling of caches. The flaw affected multiple Apple platforms prior to the relevant fixes, including iOS, iPadOS, macOS, tvOS, and watchOS. Available reporting indicates the vulnerability was used as part of the Operation Triangulation iPhone exploit chain, where malicious content ultimately caused the target device to process attacker-controlled font data during early-stage exploitation.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
One of the Apple zero-click vulnerabilities used in Operation Triangulation and referenced as actively exploited.
A FontParser font processing zero-day vulnerability used as part of the Operation Triangulation exploit chain during the silent iMessage-to-Safari infection flow.
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.