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CVE-2021-22893 is a critical vulnerability in Pulse Connect Secure affecting version 9.0R3 and later. The flaw is exposed through the Windows File Share Browser and Pulse Secure Collaboration features and allows an unauthenticated attacker to bypass authentication on the gateway and achieve remote arbitrary code execution. Public reporting describes the issue as enabling remote arbitrary file execution on the Pulse Connect Secure gateway, which in practice leads to execution of attacker-controlled code on the appliance. The vulnerability was actively exploited in the wild, including in intrusion activity against government, defense, and other organizations, and was associated with follow-on deployment of web shells, credential harvesting, and persistence on compromised appliances.
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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.
25 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability referenced as being in CISA’s KEV catalog and previously addressed via a CISA Emergency Directive.
An Ivanti zero-day referenced as having been exploited in recent years in breaches affecting government, defense, and financial organizations.
An authentication bypass vulnerability in Ivanti Pulse Connect Secure referenced as historically targeted and also explicitly noted in prior Tenable coverage as exploited in the wild.
A Pulse Secure VPN vulnerability listed as an example of an internet-facing flaw implicated in ransomware incidents (2020–2022) and recommended for defenders to check and mitigate.
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.