Shadowserver

Netscaler vulnerability was exploited as zero-day for nearly two months (CVE-2025-6543)

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Netscaler vulnerability was exploited as zero-day for nearly two months (CVE-2025-6543) 2025-08-12 at 17:51 By Zeljka Zorz FortiGuard Labs has reported a dramatic spike in exploitation attempts targeting Citrix Bleed 2, a critical buffer over‑read flaw (CVE‑2025‑5777) affecting Citrix NetScaler ADC (Application Delivery Controller) and Gateway devices. Since July 28, 2025, they have detected over 6,000 exploitation […]

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Critical CrushFTP vulnerability exploited. Have you been targeted? (CVE-2025-54309)

CrushFTP, Don't miss, enterprise, exploit, file-sharing, Hot stuff, News, Rapid7, Shadowserver, SMBs, vulnerability /

Critical CrushFTP vulnerability exploited. Have you been targeted? (CVE-2025-54309) 2025-07-21 at 15:42 By Zeljka Zorz Unknown attackers have exploited a vulnerability (CVE-2025‑54309) in the CrushFTP enterprise file-transfer server solution to gain administrative access to vulnerable deployments. It’s currently unclear what the attackers are using this access for, but data theft looks most likely. According to

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Roundcube RCE: Dark web activity signals imminent attacks (CVE-2025-49113)

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Roundcube RCE: Dark web activity signals imminent attacks (CVE-2025-49113) 2025-06-09 at 15:18 By Zeljka Zorz With an exploit for a critical Roundcube vulnerability (CVE-2025-49113) being offered for sale on underground forums and a PoC exploit having been made public, attacks exploiting the flaw are incoming and possibly already happening. According to the Shadowserver Foundation, there

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145 criminal domains linked to BidenCash Marketplace seized

Cryptocurrency, cybersecurity, FBI, Government, law enforcement, News, Searchlight Cyber, Shadowserver, US DoJ, USA /

145 criminal domains linked to BidenCash Marketplace seized 2025-06-06 at 13:01 By Help Net Security Approximately 145 darknet and conventional internet domains, along with cryptocurrency funds linked to the BidenCash marketplace, have been seized by the U.S. Attorney’s Office for the Eastern District of Virginia. The operators of the BidenCash marketplace use the platform to

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DanaBot botnet disrupted, QakBot leader indicted

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DanaBot botnet disrupted, QakBot leader indicted 2025-05-23 at 14:17 By Zeljka Zorz Operation Endgame, mounted by law enforcement and judicial authorities from the US, Canada and the EU, continues to deliver positive results by disrupting the DanaBot botnet and indicting the leaders of both the DanaBot and Qakbot Malware-as-a-Service operations. Operation Endgame 2.0 Coordinated by

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Attackers are targeting CrushFTP vulnerability with public PoC (CVE-2025-2825)

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Attackers are targeting CrushFTP vulnerability with public PoC (CVE-2025-2825) 2025-04-01 at 18:49 By Zeljka Zorz Exploitation attempts targeting the CVE-2025-2825 vulnerability on internet-facing CrushFTP instances are happening, the Shadowserver Foundation has shared on Monday, and the attackers have been leveraging publicly available PoC exploit code. What can be done? CVE-2025-2825, affecting CrushFTP versions 10.0.0 through

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48,000+ internet-facing Fortinet firewalls still open to attack

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48,000+ internet-facing Fortinet firewalls still open to attack 2025-01-22 at 14:34 By Zeljka Zorz Despite last week’s confirmation of and warnings about long-standing exploitation of CVE-2024-55591, a critical vulnerability affecting Fortinet Fortigate firewalls, too many vulnerable devices are still accessible from the Internet and open to attack: over 48,000, according to data from the Shadowserver

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UK domain registry Nominet breached via Ivanti zero-day

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UK domain registry Nominet breached via Ivanti zero-day 2025-01-13 at 22:17 By Zeljka Zorz The number of internet-facing Ivanti Connect Secure instances vulnerable to attack via CVE-2025-0282 has fallen from 2,048 to 800 in the last four days, the Shadowserver Foundation shared today. In the meantime, UK domain registry Nominet became the first publicly known

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How the Shadowserver Foundation helps network defenders with free intelligence feeds

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How the Shadowserver Foundation helps network defenders with free intelligence feeds 2024-12-05 at 07:01 By Mirko Zorz In this Help Net Security interview, Piotr Kijewski, CEO of The Shadowserver Foundation, discusses the organization’s mission to enhance internet security by exposing vulnerabilities, malicious activity, and emerging threats. Kijewski explains the foundation’s automated efforts to track and

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2,000 Palo Alto Networks devices compromised in latest attacks

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2,000 Palo Alto Networks devices compromised in latest attacks 2024-11-21 at 13:27 By Zeljka Zorz Attackers have compromised around 2,000 Palo Alto Networks firewalls by leveraging the two recently patched zero-days (CVE-2024-0012 and CVE-2024-9474), Shadowserver Foundation’s internet-wide scanning has revealed. Compromised devices are predominantly located in the US and India, the nonprofit says. Manual and

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87,000+ Fortinet devices still open to attack, are yours among them? (CVE-2024-23113)

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87,000+ Fortinet devices still open to attack, are yours among them? (CVE-2024-23113) 2024-10-15 at 14:49 By Zeljka Zorz Last week, CISA added CVE-2024-23113 – a critical vulnerability that allows unauthenticated remote code/command execution on unpatched Fortinet FortiGate firewalls – to its Known Exploited Vulnerabilities catalog, thus confirming that it’s being leveraged by attackers in the

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17,000+ Microsoft Exchange servers in Germany are vulnerable to attack, BSI warns

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17,000+ Microsoft Exchange servers in Germany are vulnerable to attack, BSI warns 2024-03-26 at 15:31 By Zeljka Zorz Around 12% of the 45,000 or so Microsoft Exchange servers in Germany that can be accessed from the Internet without restrictions “are so outdated that security updates are no longer offered for them,” the German Federal Office

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Attackers exploiting ConnectWise ScreenConnect flaws, fixes available for all users (CVE-2024-1709, CVE-2024-1708)

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Attackers exploiting ConnectWise ScreenConnect flaws, fixes available for all users (CVE-2024-1709, CVE-2024-1708) 2024-02-22 at 12:31 By Zeljka Zorz The two ScreenConnect vulnerabilities ConnectWise has recently urged customers to patch have finally been assigned CVE numbers: CVE-2024-1709 for the authentication bypass, CVE-2024-1708 for the path traversal flaw. ConnectWise has also released a newer version of ScreenConnect

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Ivanti Connect Secure flaw massively exploited by attackers (CVE-2024-21893)

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Ivanti Connect Secure flaw massively exploited by attackers (CVE-2024-21893) 2024-02-07 at 12:16 By Zeljka Zorz CVE-2024-21893, a server-side request forgery (SSRF) vulnerability affecting Ivanti Connect Secure VPN gateways and Policy Secure (a network access control solution), is being exploited by attackers. About CVE-2024-21893 CVE-2024-21893 allows a attackers to bypass authentication requirements and access certain restricted

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Russian hackers target unpatched JetBrains TeamCity servers

APT, CISA, cyber espionage, Don't miss, enterprise, exploit, Fortinet, Hot stuff, JetBrains, National Cyber Security Centre, News, Shadowserver, vulnerability /

Russian hackers target unpatched JetBrains TeamCity servers 14/12/2023 at 16:04 By Helga Labus Russian state-sponsored hackers have been exploiting CVE-2023-42793 to target unpatched, internet-facing JetBrains TeamCity servers since September 2023, US, UK and Polish cybersecurity and law enforcement authorities have warned. The targets APT 29 (aka CozyBear, aka Midnight Blizzard), believed to be associated with

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Attackers are trying to exploit Apache Struts vulnerability (CVE-2023-50164)

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Attackers are trying to exploit Apache Struts vulnerability (CVE-2023-50164) 14/12/2023 at 13:32 By Zeljka Zorz Attackers are trying to leverage public proof-of-exploit (PoC) exploit code for CVE-2023-50164, the recently patched path traversal vulnerability in Apache Struts 2. “Attackers aim to deploy webshells, with some cases targeting the parameter ‘fileFileName’ – a deviation from the original

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Atlassian Confluence data-wiping vulnerability exploited

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Atlassian Confluence data-wiping vulnerability exploited 06/11/2023 at 13:19 By Zeljka Zorz Threat actors are trying to exploit CVE-2023-22518, a critical Atlassian Confluence flaw that allows unauthenticated attackers to reset vulnerable instances’ database, Greynoise is observing. The Shadowserver Foundation has also seen 30+ IP addresses testing for the flaw in internet-facing Confluence installations. From security updates

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Zyxel firewalls under attack by Mirai-like botnet

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Zyxel firewalls under attack by Mirai-like botnet 01/06/2023 at 11:52 By Zeljka Zorz CVE-2023-28771, the critical command injection vulnerability affecting many Zyxel firewalls, is being actively exploited by a Mirai-like botnet, and has been added to CISA’s Known Exploited Vulnerabilities (KEV) catalog. About CVE-2023-28771 CVE-2023-28771 is a vulnerability that allows unauthenticated attackers to execute OS

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