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.

Published: 2025-03-21 Last update: 2025-03-24 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-30347 is rated Low Risk (36.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.35%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-30347

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-01 0.31% 0.35% +0.04%
2 2026-04-29 0.05% 0.31% +0.26%
3 2025-08-29 — 0.05% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-30347

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 1.4 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-30347

Affected software / configurations for CVE-2025-30347

Vendor Product Version Raw CPE
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r10:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r11:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r12:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r2:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r3:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r4:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r5:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r6:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r7:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r8:*:*:*:*:*:*
varnish-software varnish_enterprise 6.0.13 cpe:2.3:a:varnish-software:varnish_enterprise:6.0.13:r9:*:*:*:*:*:*

References for CVE-2025-30347

URL Tags
https://docs.varnish-software.com/security/VEV00001/ Mitigation Vendor Advisory
cvelogic Threat Intelligence