CVE-2025-32105
Published: 03 June 2025
Summary
CVE-2025-32105 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Sangoma Img2020 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 18.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A buffer overflow vulnerability tracked as CVE-2025-32105 affects the HTTP server component of the Sangoma IMG2020 appliance through version 2.3.9.6. The flaw, assigned CWE-120, carries a CVSS 3.1 base score of 9.8 and stems from insufficient bounds checking on incoming requests.
An unauthenticated attacker with network access can send a crafted HTTP request that triggers the overflow, resulting in arbitrary remote code execution. Successful exploitation grants the attacker full control over the affected device without requiring credentials or user interaction.
Technical reports detailing the vulnerability have been published on GitHub, but no vendor advisory or patch information is referenced in the available data. The associated EPSS score remains low and unchanged at 0.0147, indicating limited observed exploitation interest to date.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-16751
Vulnerability details
A buffer overflow in the the Sangoma IMG2020 HTTP server through 2.3.9.6 allows an unauthenticated user to achieve remote code execution.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in Sangoma IMG2020 HTTP server allows unauthenticated remote code execution, enabling exploitation of a public-facing application.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.