0-day And Hitlist Week -02-21-2024- [new] Jun 2026

A high‑severity vulnerability allowing unrestricted upload of Java jar and class files via the ConfigSets API. Once uploaded, these files can be accessed by Solr’s ClassLoader, leading to arbitrary code execution.

SmartScreen is a built‑in Windows feature that helps protect users from malicious websites and downloaded files. This bypass vulnerability allows an attacker to inject code into SmartScreen, potentially gaining code execution and compromising data confidentiality and system availability.

This server‑side request forgery (SSRF) vulnerability resides in the SAML component of Ivanti Connect Secure VPN. When chained with CVE‑2024‑21887 (an authenticated command injection vulnerability), an attacker can achieve unauthenticated remote code execution (RCE) against vulnerable Ivanti VPN appliances. China‑linked APT group UNC5221 has been observed exploiting both vulnerabilities in a coordinated espionage campaign affecting a wide range of global sectors. 0-day and Hitlist Week -02-21-2024-

Some of the notable 0-day exploits reported recently include:

Here is the deep dive into the zero-day chaos and the hitlist evolution for the third week of February 2024. This bypass vulnerability allows an attacker to inject

user wants a long article about "0-day and Hitlist Week -02-21-2024-". This appears to be a request for a recap of 0-day vulnerabilities and notable exploits/hitlists for the week ending February 21, 2024. To cover this, I need to gather information on 0-day vulnerabilities, exploits, patches, and threat actor activity from that period. I'll search using relevant keywords and include open-source intelligence (OSINT) and vulnerability databases. search results have provided a good starting point. The user's keyword seems to combine "0-day" and "Hitlist" for the week ending February 21, 2024. The search results highlight Microsoft's February 2024 Patch Tuesday, which included two actively exploited zero-days: CVE-2024-21412 and CVE-2024-21351. There's also mention of other zero-days in Ivanti and ScreenConnect during that period. The "Hitlist" might refer to a list of actively exploited vulnerabilities or a threat actor's target list. To gather more comprehensive information, I need to open the relevant results. search results provide a lot of information about zero-day vulnerabilities in February 2024, particularly those patched by Microsoft on Patch Tuesday (February 13, 2024). The user's keyword "Hitlist Week -02-21-2024" might refer to a specific list of actively exploited vulnerabilities or a threat actor's hitlist. I should also look for "threat actor hitlist" or "exploit hitlist" from that period. search results for "hitlist" mostly show irrelevant results. It's possible the user is referring to a specific report or series called "0-day and Hitlist". I could search for "0-day and Hitlist Week" as a phrase. search for the exact phrase "0-day and Hitlist" didn't yield relevant results. It's possible the user is referring to a blog post or a report from a specific cybersecurity vendor. I could search for "0-day and Hitlist Week 02-21-2024" as a phrase.'ll structure the article to cover the key zero-day vulnerabilities from that week, including CVE-2024-21412 and CVE-2024-21351, as well as other notable flaws in Ivanti, ScreenConnect, and Windows. I'll also discuss the threat landscape, including ransomware and APT activity, and provide mitigation strategies. The article will be comprehensive and informative. 0-Day and Hitlist Week — Week of February 21, 2024

: With the critical severity of the Exchange Server EoP flaw ( CVE-2024-21410 ) and other privilege escalation vectors, ensure that your on‑premises Exchange servers are patched and that NTLM credential relay protections are enabled. Centralize logs from firewalls

Perhaps the most concerning zero‑day of the week, CVE‑2024‑21412 was actively exploited by the advanced persistent threat (APT) group (also known as DarkCasino) in campaigns targeting financial market traders.

: Skybound’s Energon Universe expansion continued to trend heavily, modernizing classic Hasbro properties.

Given the continued popularity of Ivanti VPN appliances in enterprise networks and the existence of weaponized exploit chains, CVE‑2024‑21893 should be treated as an emergency patching priority.

Centralize logs from firewalls, edge proxies, and hypervisors into a secure, immutable SIEM platform. Hunt for anomalies such as unexpected outbound connections or administrative commands executed outside maintenance windows.