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CVE-2015-5123 is a use-after-free vulnerability in the BitmapData class of Adobe Flash Player's ActionScript 3 implementation. Specially crafted Flash content that overrides a valueOf function can trigger memory corruption, allowing remote arbitrary code execution or denial of service. Affected versions include 13.x through 13.0.0.302 and 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations. The vulnerability was exploited in the wild in July 2015, and public proof-of-concept exploit code is available.
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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 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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Adobe Flash Player's handling of SWF content that could cause a crash or potentially execute arbitrary code when a victim visits a page containing a malicious SWF file. Red Hat advisory RHSA-2015:1235 rates the update as Critical and supplies a fix upgrading Flash Player to version 11.2.202.491.
A use-after-free flaw in Adobe Flash Player's ActionScript 3 BitmapData class allows remote attackers to execute arbitrary code or cause memory-corruption denial of service using crafted Flash content that overrides a valueOf function. The record explicitly reports exploitation in the wild in July 2015.
An Adobe Flash vulnerability (zero-day at time of leak) disclosed via the 2015 Hacking Team leak.
A critical (CVSS v2 10.0) vulnerability addressed in HP Matrix Operating Environment 7.5.0.
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.