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CVE-2026-19977 is a critical improper authentication vulnerability affecting EFM ipTIME A3004T router firmware version 14.19.0. The flaw is located in the httpcon_check_session_url function within the Session Validation component of the device management interface. By manipulating session validation logic, a remote attacker can bypass authentication checks without valid credentials. The issue is exploitable over the network, requires no prior privileges and no user interaction, and public exploit information is available. Successful exploitation can expose the administrative interface to unauthorized access and full control of the affected router.
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No public exploit code observed for this vulnerability.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical improper authentication/session validation bypass vulnerability in EFM ipTIME A3004T router firmware 14.19.0 that allows remote unauthenticated attackers to bypass login and gain full administrative access.
An improper authentication vulnerability in the Session Validation component of EFM ipTIME A3004T 14.19.0, specifically in the httpcon_check_session_url function, allowing remote exploitation.
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.