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CVE-2020-3259 is an information-disclosure vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software. A buffer-tracking issue during parsing of invalid URLs allows an unauthenticated remote attacker to send a crafted GET request and retrieve device memory. The vulnerability affects specific AnyConnect and WebVPN configurations. Disclosed memory can expose confidential information, including VPN credentials and cryptographic session material. Akira ransomware operators have exploited the vulnerability.
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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.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An information disclosure vulnerability affecting Cisco ASA and FTD, listed among the Cisco vulnerabilities associated with Akira intrusions. The article recommends patching and enforcing MFA on Cisco remote-access profiles.
A vulnerability observed being exploited by Akira operators in the discussion of initial-access techniques. The content does not identify its technical mechanism or affected products.
A Cisco information disclosure vulnerability used alongside other Cisco ASA/FTD access methods in Akira intrusion activity.
A Cisco information-disclosure vulnerability reportedly used by Akira operators as part of attacks on Cisco ASA/FTD VPN infrastructure.
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.