Loading vulnerability…
CVE-2026-27546 is a critical authentication-bypass vulnerability in the _account_log function of affected IO-Link industrial master devices from Pepperl+Fuchs, Phoenix Contact, and Carlo Gavazzi running firmware versions earlier than 1.7.4. The flaw permits a remote unauthenticated attacker to establish an administrator session despite properly configured accounts. It is classified as CWE-288 and has a CVSS v3.1 score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical, remotely exploitable authentication-bypass vulnerability (CWE-288) in the _account_log function that enables an unauthenticated network attacker to obtain an administrator session.
A critical unauthenticated remote authentication-bypass vulnerability in the _account_log function that enables an attacker to log in with administrator privileges despite properly configured accounts. The listed CVSS v3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
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.