What is CVE-2025-30347?

CVE-2025-30347 is a medium-severity vulnerability in Varnish-software Varnish Enterprise, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2025-03-21.

How severe is CVE-2025-30347?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Out-of-bounds Read in Varnish-software Varnish Enterprise

CVE-2025-30347

Varnish Enterprise before 6.0.13r13 allows remote attackers to obtain sensitive information via an out-of-bounds read for range requests on ephemeral MSE4 stevedore objects.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (57.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N.

Affected products

Varnish-software Varnish Enterprise — versions 6

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

docs.varnish-software.com/security/VEV00001/

Frequently asked questions

What is CVE-2025-30347?: CVE-2025-30347 is a medium-severity vulnerability in Varnish-software Varnish Enterprise, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2025-03-21.
How severe is CVE-2025-30347?: Medium severity. CVSS v3 base score is 4.0 out of 10.