CVE-2025-30347 Information disclosure in Varnish Enterprise
Remote attackers can obtain sensitive information via out-of-bounds reads on ephemeral MSE4 stevedore objects in Varnish Enterprise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-30347?
CVE-2025-30347 is a medium-severity vulnerability in varnish-software Varnish Enterprise, published on 21 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-125
Which versions are affected by CVE-2025-30347?
It affects 1 product.
Products include Varnish-Software Varnish Enterprise.
How do I fix CVE-2025-30347?
No fix has been published for CVE-2025-30347 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-30347 being exploited?
There is no known exploitation of CVE-2025-30347 in the wild and no public exploit code.
Other vulnerabilities in varnish-software Varnish Enterprise
- CVE-2023-41104 Memory corruption in n/a
- CVE-2026-34475 Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of /
- CVE-2025-30346 Other in Varnish Cache
- CVE-2026-40394 Denial of service in Varnish Cache
- CVE-2026-40395 Denial of service in Varnish Enterprise
Sources
Also known as GHSA-ccgv-pvfh-c426.