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CVE-2021-47961 is a plaintext storage vulnerability in Synology SSL VPN Client affecting versions before 1.4.5-0684. The client insecurely stores the user's PIN code on the local machine, allowing a remote attacker to obtain or manipulate that PIN under an attack scenario involving user interaction. According to the provided context, exploitation occurs when a victim interacts with a crafted web page while the vulnerable client is running. The flaw is mapped to CWE-256 and arises from insecure storage of sensitive authentication material, enabling exposure or tampering of the PIN used by the VPN client.
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No public exploit code observed for this vulnerability.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A plaintext password storage vulnerability in Synology SSL VPN Client that allows remote attackers to obtain or manipulate a user's PIN code and potentially authorize rogue VPN configurations and intercept VPN traffic, with user interaction required.
A plaintext storage of password vulnerability in Synology SSL VPN Client that allows remote attackers to access or influence the user's PIN code, enabling unauthorized VPN configuration and possible interception of subsequent VPN traffic with user interaction.
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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.