{"id":82967,"date":"2025-10-16T18:43:09","date_gmt":"2025-10-16T18:43:09","guid":{"rendered":""},"modified":"2025-11-01T05:56:39","modified_gmt":"2025-11-01T11:56:39","slug":"cve-2025-54219-heap-based-buffer-overflow-vulnerability-in-incopy-leads-to-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54219-heap-based-buffer-overflow-vulnerability-in-incopy-leads-to-arbitrary-code-execution\/","title":{"rendered":"CVE-2025-54219: Heap-based Buffer Overflow Vulnerability in InCopy Leads to Arbitrary Code Execution<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

InCopy, a popular writing and editing software, has been discovered to have a significant vulnerability in versions 20.4, 19.5.4, and earlier. This vulnerability, identified as CVE-2025-54219, could potentially allow an attacker to execute arbitrary code in the context of the current user. The nature of this exploit demands immediate attention due to the potential system<\/a> compromise or data leakage. The susceptibility of a widely used platform makes this a serious concern that requires urgent remediation.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-54219
\nSeverity: High (CVSS: 7.8)
\nAttack Vector: Local File<\/a>
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Arbitrary code execution<\/a> leading to potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

InCopy | 20.4, 19.5.4 and earlier versions<\/p>\n

How the Exploit Works<\/strong><\/p>\n

This exploit takes advantage of a Heap-based Buffer Overflow vulnerability<\/a> in InCopy. When a specially crafted malicious file is opened by the victim, the vulnerability is triggered, allowing an attacker to overflow the buffer and consequently execute arbitrary code<\/a>. This code execution<\/a> occurs in the context of the current user, potentially giving the attacker the same permissions as the victim.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

While the specifics of the exploit are not publicly available, a conceptual example of how the vulnerability might work is as follows:<\/p>\n

def exploit(file):\n# Open the file\nwith open(file, 'rb') as f:\n# Read the file data\ndata = f.read()\n# Craft a malicious payload that overflows the buffer\npayload = b'\\x90' * 1024 + b'\\xcc' * 4\n# Replace a specific portion of the file data with the payload\nexploit_data = data.replace(b'\\x00'*1024, payload)\n# Write the exploit data back to the file\nwith open(file, 'wb') as f:\nf.write(exploit_data)<\/code><\/pre>\n
This is a simplified conceptual example. The actual exploit would likely involve more complex manipulation of the file data to trigger the buffer overflow and execute the desired code<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users are strongly advised to apply the vendor patch as soon as it is available. In the meantime, using Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Regularly backing up data and maintaining good cybersecurity hygiene, such as not opening files from unknown sources, can also help protect against potential attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview InCopy, a popular writing and editing software, has been discovered to have a significant vulnerability in versions 20.4, 19.5.4, and earlier. This vulnerability, identified as CVE-2025-54219, could potentially allow an attacker to execute arbitrary code in the context of the current user. The nature of this exploit demands immediate attention due to the potential […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-82967","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t