Threat Brief: Active Exploitation of PAN-OS CVE-2026-0257
2026-06-05T20:51:42Z•3494e95e424314a6411addeb78162ad95c14cc1a83df1b45deefe5d6f3fd543b
active-exploitationad-csaptbackdoorbrowser-extensioncaptive-portalcertificate-abusecloud-securitycveextortionfluttergen-aigremlin-stealeriranlinux-kernellocal-privilege-escalationmacosmalvertisingnpmpan-osransomwareremote-code-executionroadtoolssupply-chaintamperedchef
What happened
Palo Alto Unit 42 feed summarizing multiple recent threats and research: active exploitation of PAN-OS vulnerability CVE-2026-0257, a PAN-OS captive portal zero-day (CVE-2026-0300) enabling unauthenticated RCE, and Copy Fail (CVE-2026-31431), a critical Linux kernel local privilege escalation. Additional reports cover npm supply-chain risks, macOS malvertising distributing the FlutterShell backdoor, ransomware/extortion economy trends, Iranian APT Screening Serpens activity, ROADtools misuse for cloud intrusions, TamperedChef clusters, Gremlin stealer evolution, AD CS exploitation techniques,高
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- paloalto_unit42
- Record identifier
- 3494e95e424314a6411addeb78162ad95c14cc1a83df1b45deefe5d6f3fd543b
- Enrichment time
- 2026-06-05T20:51:42Z
- AI-assisted enrichment
- Yes
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