Loading vulnerability…
CVE-2021-1879 is a WebKit vulnerability affecting iOS, iPadOS, and watchOS that can lead to universal cross-site scripting when a device processes maliciously crafted web content. Apple stated the issue was addressed through improved management of object lifetimes, indicating a flaw in WebKit’s handling of object lifecycle state during web content processing that could be abused to execute attacker-controlled script outside the intended origin boundaries. The vulnerability was fixed in iOS 12.5.2, iOS 14.4.2, iPadOS 14.4.2, and watchOS 7.3.3. Apple reported awareness of in-the-wild exploitation.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKit vulnerability affecting Apple iOS, iPadOS, and watchOS that the content says APT29 exploited.
A zero-day vulnerability in Apple WebKit (CVE-2021-1879) that allowed attackers to bypass Safari protections and steal authentication cookies from major web services, enabling session hijacking.
A specific vulnerability (CVE-2021-1879) associated with exploitation or targeting by the Cozy Bear (APT29) threat actor.
A specific vulnerability (CVE-2021-1879) associated with exploitation or targeting by the Cozy Bear (APT29) threat actor.
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.