Cyber Brief

Cyber Brief · Jun 30 · 12 stories

Tuesday, June 30, 2026 · sent to 1 subscribers

News · The Hacker News · Jun 30

Attackers Exploit SimpleHelp CVE-2026-48558 to Deploy TaskWeaver and Djinn Stealer

An unknown threat actor has been observed exploiting a recently disclosed maximum-severity security flaw in SimpleHelp to deliver two previously unreported malware families, TaskWeaver and Djinn Stealer. The intrusion involves the exploitation of CVE-2026-48558 (CVSS score: 10.0), a critical authe…

News · BleepingComputer · Jun 30

CISA: Windows BlueHammer flaw now exploited by ransomware gangs

CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previously been abused in zero-day attacks. [...]

News · The Hacker News · Jun 30

Progress Kemp LoadMaster Flaw Could Let Attackers Run Root Commands Pre-Auth

A critical vulnerability in Progress Kemp LoadMaster can let an unauthenticated attacker execute arbitrary commands as root on the appliance by sending a crafted request to its API. The flaw, tracked as CVE-2026-8037, carries a CVSS score of 9.8 according to ZDI. A patch is available. If…

News · Help Net Security · Jun 30

SimpleHelp vulnerability exploited to deliver mighty Djinn Stealer (CVE-2026-48558)

Attackers are exploiting CVE-2026-48558, a recently patched authentication bypass vulnerability in SimpleHelp RMM, to drop the novel Djinn Stealer malware on victim computers. The malware is capable of targeting Windows, macOS, and Linux systems, and “collects credentials associated with clou…

Advisories · CISA · Jun 29

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-48558 SimpleHelp Authentication Bypass Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significan…

News · BleepingComputer · Jun 29

Nissan discloses employee data breach linked to Oracle zero-day attacks

Nissan is warning that it suffered a data breach affecting current and former employees after threat actors exploited an Oracle PeopleSoft vulnerability in data theft attacks previously linked to the ShinyHunters extortion group. [...]

News · SecurityWeek · Jun 30

Critical SimpleHelp Vulnerability Exploited for Malware Delivery

The threat actor is focused on collecting credentials, SSH keys, cryptocurrency wallets, and development tooling. The post Critical SimpleHelp Vulnerability Exploited for Malware Delivery appeared first on SecurityWeek.

News · SecurityWeek · Jun 30

Exploitation of Recent Oracle E-Business Suite Vulnerability Begins

The critical-severity defect allows unauthenticated attackers to take over the E-Business Suite’s Payments product. The post Exploitation of Recent Oracle E-Business Suite Vulnerability Begins appeared first on SecurityWeek.

News · InfoSecurity Magazine · Jun 29

US Federal Insurance Regulator Confirms Data Breach Via Oracle Flaw

An attacker has exploited a zero day in Oracle Peoplesoft to gain access to the IT systems of the NAIC, the standard-setting association for the US federal insurance system

News · CyberScoop · Jun 30

How ransomware syndicates weaponize corporate-style organization

From outsourced labor to tiered pricing models, an inside look at how today's top ransomware threats operate less like rogue hackers and more like Fortune 500 companies. The post How ransomware syndicates weaponize corporate-style organization appeared first on CyberScoop.

News · InfoSecurity Magazine · Jun 29

Russian Hackers Accused of Destructive Cyber-Attack on Jaguar Land Rover

Experts warn the Jaguar Land Rover breach bears hallmarks of Kremlin-backed hackers, citing novel ransomware, strategic timing and efforts to obscure attribution

News · CSO Online · Jun 26

Hackers exploit critical PTC Windchill PLM software flaw

Hackers are exploiting a critical vulnerability recently patched in PTC Windchill and FlexPLM, two product lifecycle management solutions used by organizations across a range of industries, including defense, aerospace, automotive, medical, electronics, industrial machinery, and consumer goods. …