CVE-2025-54957 is a critical vulnerability identified in Dolby UDC versions 4.5 through 4.13. This vulnerability allows for a crash of the DD+ decoder process when processing a malformed DD+ bitstream. Specifically, when the Evolution data is processed by evo_priv.c from the DD+ bitstream, the decoder writes that data into a buffer. The length calculation for this write can overflow due to an integer wraparound, potentially leading to an out-of-bounds write.
The vulnerability has a CVSS score of 9.8, indicating that it is critical in nature. The severity of this vulnerability is significant, as it could result in unauthorized access or crashes of the affected system. Organizations utilizing affected versions of Dolby UDC should take immediate action.
Risk to organizations includes potential system crashes, unauthorized access, and data corruption. Attackers may leverage this vulnerability to disrupt services or manipulate data. Given the critical nature of this vulnerability, organizations should prioritize patching immediately.
Currently, there is a known exploit available for this vulnerability. Organizations must actively monitor their systems for any potential signs of exploitation and take appropriate measures to mitigate risks.
Vulnerability Details
The vulnerability is classified as a crash vulnerability and is associated with two Common Weakness Enumeration (CWE) entries: CWE-190 (Integer Overflow or Wraparound) and CWE-787 (Out-of-bounds Write). The affected product is Dolby UDC, with versions ranging from 4.5 to 4.13 published on October 20, 2025.
Technical Analysis
The root cause of this vulnerability is related to the improper handling of buffer lengths during the processing of DD+ bitstreams. The attack vector is network-based, meaning that an attacker can exploit this vulnerability remotely. The attack complexity is low, requiring no privileges or user interaction, which makes this vulnerability particularly dangerous.
If exploited, this vulnerability could result in high confidentiality, integrity, and availability impacts. Organizations need to be aware of the potential risks associated with this vulnerability and take proactive measures to protect their systems.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2025-54957 is significant due to the critical nature of the vulnerability, which can lead to a complete service disruption. Organizations should consider the blast radius potential, as the impact of a successful exploitation could extend beyond the immediate affected systems.
Organizations should schedule remediation as part of their priority patch cycle, especially given the known exploit and the potential for widespread impact.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Dolby UDC prior to patching, specifically versions 4.5 through 4.13, are affected by this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching this vulnerability immediately. If a patch is not available, organizations should consider implementing temporary workarounds, such as network segmentation or monitoring for abnormal traffic patterns.
For comprehensive security measures, organizations may also consider engaging in penetration testing to identify and address similar vulnerabilities.
Detection Guidance
Organizations should monitor their logs for indicators of abnormal behavior related to the DD+ decoder process and any unusual network traffic patterns that may indicate exploitation attempts.
AppSecure Threat Intelligence Insight
CVE-2025-54957 highlights the importance of robust input validation and buffer management in software design. Security teams should take this opportunity to review their coding practices and perform regular security assessments to identify potential vulnerabilities.
For more insights on security testing practices, consider reviewing our penetration testing methodology and how to implement effective security measures.
Additionally, organizations can further enhance their security posture by exploring our offerings in application security assessments and adopting a proactive approach to vulnerability management.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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