{"id":83015,"date":"2025-10-17T00:43:48","date_gmt":"2025-10-17T00:43:48","guid":{"rendered":""},"modified":"2025-10-29T04:22:07","modified_gmt":"2025-10-29T10:22:07","slug":"cve-2025-54221-out-of-bounds-write-vulnerability-in-incopy-allowing-for-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54221-out-of-bounds-write-vulnerability-in-incopy-allowing-for-arbitrary-code-execution\/","title":{"rendered":"CVE-2025-54221: Out-of-Bounds Write Vulnerability in InCopy Allowing for Arbitrary Code Execution<\/strong>"},"content":{"rendered":"

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

The CVE-2025-54221 vulnerability is a critical issue that affects InCopy versions 20.4, 19.5.4, and earlier. This vulnerability is an out-of-bounds write issue that potentially allows an attacker to execute arbitrary code in the victim’s context. The severity of this issue is emphasized by the fact that a successful exploit could result in system compromise or data<\/a> leakage. It’s essential for users and IT administrators to understand this vulnerability<\/a> and take immediate steps to mitigate the risk it poses.<\/p>\n

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

CVE ID: CVE-2025-54221
\nSeverity: High (7.8 CVSS score)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

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

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

The exploitation of CVE-2025-54221 involves the abuse of an out-of-bounds write vulnerability<\/a> in InCopy. This vulnerability allows an attacker to write data outside the expected boundaries of allocated memory, potentially leading to the execution of arbitrary code<\/a>. The exploit requires user<\/a> interaction, specifically the victim must open a malicious file. Once the file is opened, the attacker can execute code in the context of the current user, potentially gaining unauthorized access<\/a> or causing data leakage.<\/p>\n

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

While the exact code to exploit this vulnerability<\/a> could vary depending on the specific target, an example of how this might look is as follows:<\/p>\n

# Attacker prepares a malicious InCopy file\necho \"malicious_payload\" > malicious.icml\n# Attacker sends the malicious file to the victim\nmail -s \"Important Document\" victim@example.com < malicious.icml<\/code><\/pre>\n
In this example, the attacker creates a malicious InCopy file and sends it to the victim via<\/a> email. If the victim opens this malicious file with a vulnerable version of InCopy, the arbitrary code embedded within the file would be executed<\/a>, potentially compromising the system or causing data leakage.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate the risk posed by CVE-2025-54221, users should apply the vendor-provided patch as soon as it is available. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to detect and potentially block exploitation attempts. Regularly updating and patching software is one of the most effective ways to protect against such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The CVE-2025-54221 vulnerability is a critical issue that affects InCopy versions 20.4, 19.5.4, and earlier. This vulnerability is an out-of-bounds write issue that potentially allows an attacker to execute arbitrary code in the victim’s context. The severity of this issue is emphasized by the fact that a successful exploit could result in system compromise […]<\/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-83015","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