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CVE-2025-27093 affects the Sliver command-and-control framework’s custom WireGuard netstack in versions 1.5.43 and earlier, as well as the 1.6.0-dev development version. The vulnerable netstack does not enforce traffic restrictions between WireGuard clients, allowing peers on the Sliver WireGuard network to communicate with each other without intended isolation. As a result, compromised or additional WireGuard clients can reach services exposed by other clients, including operator-host services bound to the WireGuard interface, and can access port forwards that were expected to be limited. The issue is effectively a missing authorization/network-segmentation control within the WireGuard client mesh, rather than a memory corruption flaw.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.