Auth bypass in Digigram Pyko-Out
CVE-2025-3927
Digigram's PYKO-OUT audio-over-IP (AoIP) web-server does not require a password by default, allowing any attacker with the target IP address to connect and compromise the device, potentially pivoting to connected network or hardware devices.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Digigram Pyko-Out — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.digigram.com/download/pyko-out-user-manual-en-jan-2019/ (Product)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-3927?
- CVE-2025-3927 is a critical-severity vulnerability in Digigram Pyko-Out, classified under Missing Authorization. CVSS score: 9.8/10. Published 2025-05-02.
- How severe is CVE-2025-3927?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-3927 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.