- by x32x01 ||
In today’s connected world, hackers constantly search for weak spots to break into systems. These security flaws - known as vulnerabilities - can lead to stolen data, ransomware, or full system compromise. Here’s a look at the Top 10 most exploited vulnerabilities that every tech user and organization should know about.
💡 Tip: Always update Citrix devices and restrict external access to management ports.
💡 Tip: Patch Windows servers immediately and monitor domain controller activity.
💡 Tip: Apply the latest Exchange updates and block external access to /owa until patched.
💡 Tip: Keep web frameworks updated and remove outdated plugins.
💡 Tip: Stop using outdated browsers and enable automatic security updates.
💡 Tip: Change VPN passwords regularly and upgrade to the latest firmware.
💡 Tip: Always update CMS cores and plugins right after a new release.
💡 Tip: Disable RDP if not needed and use network-level authentication.
💡 Tip: Keep Windows fully updated and verify SSL certificates carefully.
💡 Tip: Limit admin access and update Atlassian tools immediately.
To stay safe:
1️⃣ CVE-2019-19781 - Citrix ADC and Gateway RCE
A serious flaw in Citrix ADC lets attackers run commands remotely on targeted servers. This means hackers can easily gain access and steal sensitive data if the system isn’t patched.💡 Tip: Always update Citrix devices and restrict external access to management ports.
2️⃣ CVE-2020-1472 - Zerologon
Known as Zerologon, this bug hits Microsoft’s Netlogon service. It allows hackers to take over the Active Directory, giving them control of the entire network.💡 Tip: Patch Windows servers immediately and monitor domain controller activity.
3️⃣ CVE-2021-26855 - Microsoft Exchange ProxyLogon
This vulnerability in Microsoft Exchange Server became a nightmare for IT admins. Attackers could bypass login protections and execute commands, leading to massive email leaks and ransomware attacks.💡 Tip: Apply the latest Exchange updates and block external access to /owa until patched.
4️⃣ CVE-2017-5638 - Apache Struts (Equifax Breach)
The infamous Equifax breach happened because of this flaw in Apache Struts. It allowed remote code execution and exposed millions of users’ private information.💡 Tip: Keep web frameworks updated and remove outdated plugins.
5️⃣ CVE-2018-8174 - Internet Explorer VBScript Engine
This bug in Internet Explorer let hackers infect users through malicious web pages.💡 Tip: Stop using outdated browsers and enable automatic security updates.
6️⃣ CVE-2019-11510 - Pulse Secure VPN
Attackers used this flaw to break into corporate VPNs, stealing credentials and sensitive files.💡 Tip: Change VPN passwords regularly and upgrade to the latest firmware.
7️⃣ CVE-2018-7600 - Drupalgeddon 2
Drupal, a popular CMS, had a serious vulnerability that let attackers inject malicious code and fully take over websites.💡 Tip: Always update CMS cores and plugins right after a new release.
8️⃣ CVE-2019-0708 - BlueKeep
A wormable bug in Windows Remote Desktop Protocol (RDP) that reminded everyone of WannaCry. It allowed hackers to spread malware quickly across networks.💡 Tip: Disable RDP if not needed and use network-level authentication.
9️⃣ CVE-2020-0601 - Windows CryptoAPI Spoofing
This vulnerability let attackers forge certificates, tricking users into trusting fake websites or updates.💡 Tip: Keep Windows fully updated and verify SSL certificates carefully.
🔟 CVE-2019-11580 - Atlassian Crowd
A critical flaw in Atlassian Crowd, an identity management system, allowed attackers to control user accounts and systems remotely.💡 Tip: Limit admin access and update Atlassian tools immediately.
🚀 Final Thoughts - Stay One Step Ahead
Cybercriminals are fast, but good security habits make you faster.To stay safe:
- Apply patches regularly 🧩
- Use endpoint protection 🛡️
- Monitor network activity 📊
- Educate your team 👨💻
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