CVE-2025-3927: Digigram's PYKO-OUT audio-over-IP (AoIP) web-server does not require a password by default, allowing any attac

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CRITICAL 9.8REMOTEMITIGATE

CVE-2025-3927 is a critical-severity flaw (CVSS 9.8) affecting pyko-out. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-862
Published	2025-05-02
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: digigram

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-02 15:15 UTCPublished CVE record published
2026-06-17 09:20 UTCUpdated Record last modified

digigram pyko-out MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pyko-out || rpm -q pyko-out || pyko-out --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-3927?

pyko-out: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-3927 being exploited?

CVE-2025-3927 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-3927 affect?

CVE-2025-3927 affects pyko-out. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2025-3927?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

References

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