Cyber Brief

Cyber Brief · Jun 29 · 12 stories

Monday, June 29, 2026 · sent to 1 subscribers

News · The Hacker News · Jun 29

Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw

A public proof-of-concept is now out for CVE-2026-55200, a critical flaw in libssh2 that lets a malicious or compromised SSH server trigger memory corruption on a connecting client, with possible code execution. No credentials, no user interaction. The bug affects every release up to and including …

News · The Hacker News · Jun 29

Microsoft Removes 119 Edge Extensions That Hid Malware in Images and Fonts

Microsoft has shut down a long-running malicious extension operation on the Edge Add-ons store that hid its payloads inside ordinary image and font files, then woke up days after install to steal credentials and run ad fraud. The company calls it StegoAd, a mash-up of steganography and adware…

News · BleepingComputer · Jun 28

Data breach exposes up to 14.2 million email logins at six ISPs

Japanese telecommunications operator KDDI Corporation disclosed a data breach where threat actors gained access to one of its email systems used by five other internet service providers (ISPs) in the country. [...]

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 · BleepingComputer · Jun 26

CISA sets urgent deadline to fix Cisco flaw exploited in attacks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is giving federal agencies until Sunday to patch a vulnerability in Cisco Unified Communications Manager Server that is being actively exploited. [...]

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. …

News · Help Net Security · Jun 29

Mozilla warns of indirect prompt injection risk in AI coding agents

A malicious GitHub repository can silently compromise a developer’s machine without containing a single line of malicious code, security researchers at Mozilla’s Zero Day Investigative Network (0DIN) warned. The attack The proof-of-concept attack targets AI-powered coding agents such as…

News · Help Net Security · Jun 28

Week in review: Fortibleed campaign’s impact on orgs, Cisco Unified CM flaw exploited

Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Encrypted DNS still tells an eavesdropper where to look Encrypted DNS runs across much of the Internet. DNS over TLS, HTTPS, and QUIC keep the contents of a query away from anyone watching a network li…

News · CyberScoop · Jun 29

What the post-quantum executive order really demands of CISOs

ith federal PQC deadlines set for 2030 and 2031, CISOs face a multi-year transformation program that most organizations have not yet started. The window for orderly execution is narrowing fast. The post What the post-quantum executive order really demands of CISOs appeared first on CyberScoop.

Advisories · CISA · Jun 25

Delta Electronics DTM Soft

View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code. The following versions of Delta Electronics DTM Soft are affected: DTMSoft vers:all/*  CVSS Vendor Equipment Vulnerabilities v3 7.8 Delta Electronics Delta Electronics D…

Advisories · CISA · Jun 25

Horner Automation Cscape

View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker to disclose information and execute arbitrary code. The following versions of Horner Automation Cscape are affected: Cscape <10.2_SP3  CVSS Vendor Equipment Vulnerabilities v3 7.8 Horner A…