Latest cybersecurity reporting from selected sources.

CISA confirms BlueHammer (CVE-2026-33825) is now used in ransomware attacks to gain SYSTEM privileges through Microsoft Defender. BlueHammer, tracked as CVE-2026-33825, has moved from proof-of-concept noise to real ransomware attacks in the wild, the US CISA confirms. BlueHammer allows attackers to escalate privileges locally in Microsoft Defender. The vulnerability, along with two other zero-days dubbed […]

Cisco has patched a bug in Unified Communications Manager that lets an unauthenticated attacker on the network write files to the box and, from there, climb to root

Cisco patched a critical Unified CM flaw with public PoC code that allows unauthenticated attackers to launch SSRF attacks remotely. Cisco has addressed a high-severity vulnerability, tracked as CVE-2026-20230, affecting Unified CM and Unified CM SME. The flaw, caused by improper validation of certain HTTP requests, allows a remote attacker without authentication to perform server-side […]

The critical CVE-2026-41940 authentication bypass vulnerability in cPanel, WHM, and WP Squared is being actively exploited in the wild and has been leveraged in attempts since late February. [...]

As exploitation activity against CVE-2025-55182 ramps up, researchers are finding some proof-of-concept exploits contain bypasses for web application firewall (WAF) rules.

CVE-2025-55182 is a CVSS 10.0 pre-authentication RCE affecting React Server Components. Amid the flood of fake proof-of-concept exploits, scanners, exploits, and widespread misconceptions, this technical analysis intends to cut through the noise.

Oracle has silently fixed an Oracle E-Business Suite vulnerability (CVE-2025-61884) that was actively exploited to breach servers, with a proof-of-concept exploit publicly leaked by the ShinyHunters extortion group. [...]

Oracle has silently fixed an Oracle E-Business Suite vulnerability (CVE-2025-61884) that was actively exploited to breach servers, with a proof-of-concept exploit publicly leaked by the ShinyHunters extortion group. [...]

A critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed "CitrixBleed 2," was actively exploited nearly two weeks before proof-of-concept (PoC) exploits were made public, despite Citrix stating that there was no evidence of attacks. [...]

Researchers have released proof-of-concept (PoC) exploits for a critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed CitrixBleed2, warning that the flaw is easily exploitable and can successfully steal user session tokens. [...]

Roses are red, violets are blue, CVE-2024-53704 is perfect for a ransomware crew Miscreants are actively abusing a high-severity authentication bypass bug in unpatched internet-facing SonicWall firewalls following the public release of proof-of-concept exploit code.…

CVE-2024-1086 turns the page tables on system admins A Linux privilege-escalation proof-of-concept exploit has been published that, according to the bug hunter who developed it, typically works effortlessly on kernel versions between at least 5.14 and 6.6.14. …

A proof-of-concept (PoC) exploit is released for the 'Citrix Bleed' vulnerability, tracked as CVE-2023-4966, that allows attackers to retrieve authentication session cookies from vulnerable Citrix NetScaler ADC and NetScaler Gateway appliances. [...]

At this point, just assume your kit is compromised Citrix has urged admins to "immediately" apply a fix for CVE-2023-4966, a critical information disclosure bug that affects NetScaler ADC and NetScaler Gateway, admitting it has been exploited.…

Following the publication of the critical Linux security vulnerability, security specialists released PoC exploits to test the implications of CVE-2023-4911.

Snowballing PoC exploits for CVE-2023-23397 and a massive attack surface means almost business user could be a victim.

Security researchers have shared technical details for exploiting a critical Microsoft Outlook vulnerability for Windows (CVE-2023-23397) that allows hackers to remotely steal hashed passwords by simply receiving an email. [...]

Proof-of-concept exploits for the actively exploited critical CVE-2022-26134 vulnerability impacting Atlassian Confluence and Data Center servers have been widely released this weekend. [...]