Vulnerabilities · 6h ago

k0t used edge devices to persist and steal data

Group-IB and NyxLab say k0t targeted exposed FortiGate, FortiWeb and GlobalProtect devices in a campaign that exposed more than 70,000 credentials. The investigation reports victims worldwide and activity from February to June 2026.

The operators either exploited known flaws—including a path traversal in FortiWeb and an authentication bypass in Palo Alto software—or guessed common passwords. They then used VPN connections and remote-access tools to maintain entry, and exfiltrated data. So the initial break-in could leave behind access and stolen information, not just compromised credentials.

The campaign overlaps in time with FortiBleed, but researchers say the credential and LDAP data may be a separate dataset or tied to only some operators. For organizations investigating exposed edge devices, fixing an entry flaw alone may not establish whether persistent access or data theft occurred—or which activity the recovered credentials belong to.

CVE-2025-64446

NVD KEV

Known exploited · CISA KEV

CVSS 9.8 CRITICAL: a relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.4… EPSS 92% (100th percentile).

CISA federal remediation date Nov 21 · date passed

CVE-2026-0257

NVD KEV

Known exploited · CISA KEV

EPSS 97% (100th percentile).

CISA federal remediation date Jun 1 · date passed

Timeline

Sources

1 source covering this story

Entities

Vendor digest: Fortinet

Vendor digest: Palo Alto Networks

Part of the PlainSec briefing for 2026-10-23

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