CVE-2025-20378

mediumpriority · track · 24EPSS 0.003 · 16 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (16th) EPSS

CVSS 6.1 · medium

Is it mine?

29 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-22

In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.1–6.1

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.13.1lowAV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:Nsecondary · psirt@cisco.com USexploitability 1.6 · impact 1.4

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USCWE-601US

affected products (29)

Products and version ranges known to be affected.

Splunk Splunk Enterprise <10.0.1all versionscert_bundDE
Splunk Splunk Enterprise <9.2.9all versionscert_bundDE
Splunk Splunk Enterprise <9.3.7all versionscert_bundDE
Splunk Splunk Enterprise <9.4.5all versionscert_bundDE
Splunk Splunk Enterprise< 10.0.1cert_bundDE
Splunk Splunk Enterprise< 9.2.9cert_bundDE
Splunk Splunk Enterprise< 9.3.7cert_bundDE
Splunk Splunk Enterprise< 9.4.5cert_bundDE
Splunk Splunk Cloud Platform10.0.2503 → 10.0.2503.5enisa_euvdEU
Splunk Splunk Cloud Platform9.3.2408 → 9.3.2408.121enisa_euvdEU
Splunk Splunk Cloud Platform9.3.2411 → 9.3.2411.111enisa_euvdEU
Splunk Splunk Enterprise10.0 → 10.0.1enisa_euvdEU
Splunk Splunk Enterprise9.2 → 9.2.9enisa_euvdEU
Splunk Splunk Enterprise9.3 → 9.3.7enisa_euvdEU
Splunk Splunk Enterprise9.4 → 9.4.5enisa_euvdEU
Splunk Inc. Splunk Cloud Platform≤ 9.3.2411.111fstec_bduRU
Splunk Inc. Splunk Cloud Platform≤ 9.3.2408.121fstec_bduRU
Splunk Inc. Splunk Cloud Platform≤ 10.0.2503.5fstec_bduRU
Splunk Inc. Splunk Enterprise≤ 10.0.1fstec_bduRU
Splunk Inc. Splunk Enterprise≤ 9.2.9fstec_bduRU

showing 20 of 29

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2588Splunk Splunk Enterprise: Mehrere SchwachstellenDeutsch2025-11-12csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um Spoofing-Angriffe durchzuführen und Sicherheitsmaßnahmen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2025-11-12modified 2026-10-18

references (3)

External citations — patches, advisories, analysis.

scry

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