Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:LSummary
CVE-2025-21427 is a high-severity Buffer Over-read (CWE-126) vulnerability in Qualcomm Sa4150P Firmware. Its CVSS base score is 8.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked at the 10th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-21427 is an information disclosure vulnerability that occurs while decoding RTP packet payloads when User Equipment (UE) receives RTP packets from the network. It is associated with CWE-126 (Buffer Over-read) and CWE-125 (Out-of-bounds Read), earning a CVSS v3.1 base score of 8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L). The vulnerability affects components in Qualcomm products, as detailed in their security advisories.
The vulnerability can be exploited by a remote attacker with network access who sends a specially crafted RTP packet to the targeted UE. No authentication or user interaction is required, and exploitation has low complexity. Successful exploitation results in high-impact confidentiality loss through information disclosure, along with low-impact availability disruption.
Mitigation guidance is provided in the Qualcomm July 2025 Security Bulletin, available at https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2025-bulletin.html. Security practitioners should consult this advisory for affected products, patch availability, and recommended remediation steps.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20492
Vulnerability Data
Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation (static analysis, fuzzing, bounds checking tests) directly finds buffer over-read flaws.
Engineering principles such as memory-safe design and bounds-checked abstractions structurally stop introduction of out-of-bounds reads.
Process isolation limits the blast radius of an over-read to the compromised domain.
Input validation enforces length and index constraints that prevent many externally triggered over-reads.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure development practices directly prevent introduction of buffer over-read weaknesses.
Vulnerability identification processes can discover buffer over-read flaws via scanning or review.
Patching or replacing vulnerable software removes known instances of buffer over-read bugs.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development can detect buffer over-reads before release.
Logging can record evidence of an out-of-bounds read but does not prevent the weakness itself.
Secure SDLC mandates input validation and bounds checking that can prevent buffer over-reads.
Application security requirements can specify buffer-size and bounds-checking rules.
Secure architecture principles include memory-safety and bounds-checking design choices.
Secure coding standards directly require bounds-checked buffer access, mitigating over-reads.