Security1 publisher2 min readPublished
Red Heron-linked actor turned mid-July wp2shell exploits into 18,566 stolen government records
GreyNoise traced scans from a single IP address, running since early June 2026, to a Chinese-speaking actor that breached 49 organizations through WordPress Core and stripped configs and root hashes from 996 ZyXEL switches.
The Watch · Security desk

What happened
- Public exploits for the wp2shell flaws in WordPress Core, CVE-2026-63030 and CVE-2026-60137, appeared in mid-July and exploitation followed days later, breaching at least 49 organizations in 29 countries.
- From August 17 the actor exploited CVE-2026-7273 in ZyXEL GS1900 Smart Managed Switches, pulling configurations, network information and hashed root credentials from 996 devices in 48 countries.
- At an unnamed Western government organization the actor reached an internal SQL server and took at least 18,566 records, and most other victims were small businesses and government bodies.
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Why it matters
- exposure Owners of the 996 GS1900 switches have to assume the device configuration and the root password hash are in an attacker's hands, a problem the WordPress patch leaves in place.
- decision For WordPress Core, a published proof of concept is now the start of an exploitation window measured in days. Core updates move out of the routine maintenance slot.
- constraint Remediation programs that schedule work off CISA's KEV catalog will under-cover this cluster, because part of what the actor is exploiting is not listed there.
- capability One operator working 2022, 2023 and 2026 bugs from the same address means an unpatched Dirty Pipe host is as reachable as a July WordPress install, and it is the same crew doing both.
The Western government intrusion has the fullest record. The actor arrived with a custom wp2shell exploit, then checked Microsoft Defender, AMSI, available services, listening ports, local accounts, application restrictions and database configuration [8]. Over 36 minutes it ran 17 scripts to bypass AMSI, escalate through token impersonation or theft, create a local administrator and extract registry data [9], about one script every two minutes [19].
After locating credentials for a backend SQL database, the actor sprayed them against an internal SQL server and got in [10]. What came out included accounts, plaintext passwords and personally identifiable information connected to government and law-enforcement agencies [11].
Against the switches, the campaign went wider and shallower. GreyNoise dates the CVE-2026-7273 exploitation to August 17, roughly a month after the wp2shell campaign began [21], and the extraction from the GS1900 units covered configurations, network information and hashed root-level credentials [13]. The report does not include a disclosure or patch date for the ZyXEL flaw [22], so the days-from-PoC pattern is documented for WordPress Core [6] alone.
Vintage is the other thing to read off the target list. Alongside the 2026 bugs, GreyNoise confirmed targeting of PAN-OS GlobalProtect, FlowiseAI (CVE-2026-56271), Gitea (CVE-2026-60004), Nuclio (CVE-2026-79756), SENAITE LIMS (CVE-2026-54569), Proxmox VE (CVE-2023-54391) and the Linux kernel's Dirty Pipe, CVE-2022-0847 [16]. Dirty Pipe is four years older than the WordPress flaws being worked in the same campaign [20]. The actor also tried to chain three Ubiquiti UniFi OS flaws, CVE-2026-34908, CVE-2026-34909 and CVE-2026-34910, for root-level remote code execution [14]; CISA has listed those three as actively exploited since late June 2026 [15]. GreyNoise says not all the vulnerabilities in this cluster have been added to the Known Exploited Vulnerabilities catalog [17].
One victim sits outside the government-and-small-business pattern: a Russian state organization in occupied Ukraine, which the researchers described as a "red-on-red" compromise [12].
The scans and the exploit attempts come from the same IP address, observed since early June 2026, and GreyNoise ties that activity to a threat actor related to Red Heron, a group previously linked to exploiting a critical flaw in the self-hosted Git service Gitea [2][3]. The detection came through the company's Global Observation Grid sensor network [4]. GreyNoise has published indicators of compromise for the activity, including backdoor hashes and command-and-control infrastructure [18].
What to watch
- Whether CISA adds CVE-2026-7273, the wp2shell pair or the FlowiseAI and Nuclio flaws to the KEV catalog.