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CVE-2026-16599 is a denial-of-service vulnerability in GNU Wget through version 1.25.0. In FTP OPIE/S-KEY authentication handling, Wget uses the server-supplied sequence number from an FTP challenge as the iteration count for an MD5 key-derivation loop without enforcing an upper bound. A malicious FTP server, or an on-path attacker capable of modifying plaintext FTP traffic, can supply a sequence number near INT_MAX and cause excessive CPU-bound MD5 processing. The issue is classified as CWE-606, Unchecked Input for Loop Condition.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A network-accessible vulnerability whose CVSS vectors indicate low attack complexity, no required privileges, and required user interaction. The stated impact is limited to low availability loss, with no confidentiality or integrity impact. The content does not identify the affected product or underlying flaw.
A vulnerability affecting wget on SUSE Linux 12 that can cause a limited availability impact and requires user interaction, according to the supplied CVSS v3 vector.
A vulnerability tracked as CVE-2026-16599 affecting wget on SUSE Linux 15. The provided CVSS vectors indicate network reachability, low attack complexity, no privileges required, user interaction required, and an availability impact.
A network-reachable availability-impacting vulnerability in wget packages for the listed CentOS, Debian, and Red Hat Enterprise Linux distributions. It has a CVSS v3 availability-only impact (C:N/I:N/A:H); the plugin is classified as unpatched.
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.