Overview
The vulnerability CVE-2025-26780 is a serious security flaw found in Samsung Mobile Processor and Modem Exynos 2400 and Modem 5400. This vulnerability can cause a Denial of Service (DoS) attack, potentially compromising system security or causing data leakage. It is critical that this vulnerability is addressed promptly to prevent any potential damage.
Vulnerability Summary
CVE ID: CVE-2025-26780
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Samsung Mobile Processor Exynos 2400 | All Versions
Samsung Modem 5400 | All Versions
How the Exploit Works
The vulnerability works by sending a malformed PDCP packet to the target system. The Samsung Mobile Processor and Modem Exynos 2400 and Modem 5400 lack a length check for these packets. When a malformed packet is received, it causes the system to crash, leading to a Denial of Service (DoS) attack.
Conceptual Example Code
The following is a conceptual example of a malicious PDCP packet sent to exploit the vulnerability. This is not an actual code, but a representation of how a potential attack might occur.
# Pseudo command to send a malformed PDCP packet
send_packet --target target.example.com --port 1234 --packet "{ 'malformed_pdcp_packet': '...' }"This packet, when processed by the vulnerable Samsung Mobile Processor and Modem, would cause a system crash leading to a Denial of Service. In some situations, it could also lead to system compromise or data leakage.
Mitigation Guidance
The primary mitigation for this vulnerability is to apply the vendor patch provided by Samsung. If the patch cannot be applied immediately, a temporary mitigation could be to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block malformed PDCP packets.
