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CVE detail

CVE-2024-4577

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

CVSS 9.8 · CriticalBuzz score 80.0KEV listed1 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 80.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 30.0 · diversity 17.5 · KEV 25.0 · OTX 0.0 · PoC 7.5
Mention score
30.0
21 evidence mentions in the snapshot
Diversity score
17.5
7 sources across 2 categories
KEV score
25.0
Known exploited vulnerability present
OTX score
0.0
0 OTX pulses
PoC score
7.5
1 repos · best confidence 0.99
Best PoC traction
33
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
21 source links · newest first
  • SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 38Security Affairs

    Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Decrypting Encrypted files from Akira Ransomware (Linux/ESXI variant 2024) using a bunch of GPUs Jaguar Land Rover Breached by HELLCAT Ransomware Group Using Its Infostealer Playbook—Then a Second Hacker Strikes ClearFake’s New Widespread Variant: Increased Web3 […]

    newssecurityaffairs.comMar 23, 2025, 6:58 PM
  • A new round of the weekly SecurityAffairs newsletter arrived! Every week the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. U.S. Treasury removed sanctions against the crypto mixer service Tornado Cash Zero-day broker Operation Zero offers up to […]

    newssecurityaffairs.comMar 23, 2025, 6:41 PM
  • A new round of the weekly SecurityAffairs newsletter arrived! Every week the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. New MassJacker clipper targets pirated software seekers Cisco IOS XR flaw allows attackers to crash BGP process on […]

    newssecurityaffairs.comMar 16, 2025, 10:06 AM
  • Threat actors exploit PHP flaw CVE-2024-4577 for remote code execution. Over 1,000 attacks detected globally. GreyNoise researchers warn of a large-scale exploitation of a critical vulnerability, tracked as CVE-2024-4577 (CVSS 9.8), in PHP. An attacker could exploit the vulnerability to achieve remote code execution on vulnerable servers using Apache and PHP-CGI. The flaw CVE-2024-4577 (CVSS score: 9.8) is […]

    newssecurityaffairs.comMar 10, 2025, 2:52 PM
  • GreyNoise warns of mass exploitation of a critical vulnerability in PHP leading to remote code execution on vulnerable servers.

    newswww.securityweek.comMar 10, 2025, 11:50 AM
  • ‍GreyNoise data confirms that exploitation of CVE-2024-4577 extends far beyond initial reports. Attack attempts have been observed across multiple regions, with notable spikes in the United States, Singapore, Japan, and other countries throughout January 2025.

    vendorwww.greynoise.ioMar 7, 2025, 12:00 AM
  • Security researchers have outlined a novel attack vector that exploits the “Best Fit” character conversion technology built into Windows. The technology comes into play in string conversions, particularly when characters cannot be directly represented in a target character set. However, application security experts Orange Tsai and Splitline Huang from Taiwanese firm DEVCORE used a presentation […]

    newswww.csoonline.comDec 12, 2024, 6:20 PM
  • Androxgh0st, a botnet known to steal cloud credentials and exploit vulnerabilities in web frameworks and servers, is now also targeting IoT devices such as home routers, security firm CloudSEK said in a new report. It seems that some of the IoT exploits have been borrowed from a Chinese botnet dubbed Mozi that was believed to […]

    newswww.csoonline.comNov 8, 2024, 8:39 PM
  • Experts spotted a previously undetected backdoor, dubbed Msupedge, that was employed in an attack against a university in Taiwan. Broadcom Symantec researchers discovered a previously undetected backdoor, called Msupedge, that was employed in an attack targeting an unnamed university in Taiwan. The most notable feature of the backdoor is that it relies on DNS tunnelling […]

    newssecurityaffairs.comAug 20, 2024, 5:27 PM
  • Discover the 2024 ransomware landscape: a 4.3% increase in leak site posts compared to the first half of 2023, top targeted sectors and impacted countries.

    vendorunit42.paloaltonetworks.comAug 9, 2024, 10:00 AM
  • Security Affairs Malware Newsletter – Round 2Security Affairs

    Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape. New Android Spyware Steals Data from Gamers and TikTok Users A Wolf in Sheep’s Clothing: Practical Black-box Adversarial Attacks for Evading Learning-based Windows Malware Detection in the Wild Mekotio Banking Trojan Threatens Financial Systems in Latin America UNVEILING […]

    newssecurityaffairs.comJul 14, 2024, 5:01 PM
  • A new round of the weekly SecurityAffairs newsletter arrived! Every week the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Vyacheslav Igorevich Penchukov was sentenced to prison for his role in Zeus and IcedID operations Rite Aid disclosed […]

    newssecurityaffairs.comJul 14, 2024, 4:39 PM
  • Multiple threat actors exploit a recently disclosed security PHP flaw CVE-2024-4577 to deliver multiple malware families. The Akamai Security Intelligence Response Team (SIRT) warns that multiple threat actors are exploiting the PHP vulnerability CVE-2024-4577 to deliver multiple malware families, including Gh0st RAT, RedTail cryptominers, and XMRig. “Threat actors continued the speedy-time-from-disclosure-to-exploitation trend and were quick […]

    newssecurityaffairs.comJul 11, 2024, 2:31 PM
  • A new round of the weekly SecurityAffairs newsletter arrived! Every week the best security articles from Security Affairs are free for you in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. London hospitals canceled over 800 operations in the week after Synnovis ransomware attack DORA Compliance Strategy […]

    newssecurityaffairs.comJun 16, 2024, 8:53 PM
  • Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Users of JetBrains IDEs at risk of GitHub access token compromise (CVE-2024-37051) JetBrains has fixed a critical vulnerability (CVE-2024-37051) that could expose users of its integrated development environments (IDEs) to GitHub access token compromise. 20,000 FortiGate appliances compromised by Chinese hackers Coathanger – a piece of malware specifically built to persist on Fortinet’s FortiGate appliances – may still be lurking … More →

    newswww.helpnetsecurity.comJun 16, 2024, 8:00 AM
  • An OS command injection vulnerability in Windows-based PHP (CVE-2024-4577) in CGI mode is being exploited by the TellYouThePass ransomware gang. Imperva says the attacks started on June 8, two days after the PHP development team pushed out fixes, and one day after WatchTowr researchers published a technical analysis of the flaw and proof-of-concept exploit code. About CVE-2024-4577 Discovered and reported by Orange Tsai, principal security researcher at Devcore, CVE-2024-4577 allows attackers to bypass the protections … More →

    newswww.helpnetsecurity.comJun 13, 2024, 11:51 AM
  • U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Mali GPU Kernel Driver, PHP bugs to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: The vulnerability CVE-2024-4610 is a use-after-free issue issue that impacts Bifrost GPU Kernel Driver (all versions from r34p0 to r40p0) and Valhall […]

    newssecurityaffairs.comJun 12, 2024, 9:30 PM
  • The TellYouThePass ransomware gang started exploiting a recent code execution flaw in PHP days after public disclosure.

    newswww.securityweek.comJun 12, 2024, 8:50 AM
  • 10th June – Threat Intelligence ReportCheck Point Research

    For the latest discoveries in cyber research for the week of 10th June, please download our Threat_Intelligence Bulletin. TOP ATTACKS AND BREACHES Pathology services provider Synnovis has experienced a ransomware attack that affected procedures and operations in several major hospitals in London, including the Department of Health and Social Care, NHS Qilin (formerly Agenda) ransomware […]

    vendorresearch.checkpoint.comJun 10, 2024, 2:30 PM
  • PHP has released patches for CVE-2024-4577, a critical vulnerability that could lead to arbitrary code execution on remote servers.

    newswww.securityweek.comJun 10, 2024, 1:20 PM
  • A new PHP for Windows remote code execution (RCE) flaw affects version 5.x and earlier versions, potentially impacting millions of servers worldwide. Researchers at cybersecurity firm DEVCORE discovered a critical remote code execution (RCE) vulnerability, tracked as CVE-2024-4577, in the PHP programming language. An unauthenticated attacker can exploit the flaw to take full control of affected servers. PHP is […]

    newssecurityaffairs.comJun 9, 2024, 1:27 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.99 · max 33 stars

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