How severe is CVE-2025-41074?

CVE-2025-41074 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-41074 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-41074?

CVE-2025-41074 affects Limesurvey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-41074?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-41074 have an EU (EUVD) identifier?

Yes. CVE-2025-41074 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198281.

When was CVE-2025-41074 published?

CVE-2025-41074 was published on 2025-11-20 and last updated on 2026-06-17.

CVE-2025-41074

CVE-2025-41074 is a high-severity vulnerability in Limesurvey with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198281
Weakness: CWE-835
Affected product: Limesurvey
Published: 2025-11-20
Last modified: 2026-06-17

Description

Vulnerability in LimeSurvey 6.13.0 in the endpoint /optout that causes infinite HTTP redirects when accessed directly. This behavior can be exploited to generate a Denegation of Service (DoS attack), by exhausting server or client resources. The system is unable to break the redirect loop, which can cause service degradation or browser instability.

Frequently asked questions

What is CVE-2025-41074?: Vulnerability in LimeSurvey 6.13.0 in the endpoint /optout that causes infinite HTTP redirects when accessed directly. This behavior can be exploited to generate a Denegation of Service (DoS attack), by exhausting server or client resources. The system is unable to break the redirect loop, which can cause service degradation or browser instability.
How severe is CVE-2025-41074?: CVE-2025-41074 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-41074 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-41074?: CVE-2025-41074 affects Limesurvey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-41074?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-41074 have an EU (EUVD) identifier?: Yes. CVE-2025-41074 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198281.
When was CVE-2025-41074 published?: CVE-2025-41074 was published on 2025-11-20 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-limesurvey-0

Affected products (1)

cpe:2.3:a:limesurvey:limesurvey:6.13.0:*:*:*:*:*:*:*

More vulnerabilities in Limesurvey

CVE-2025-56422 — Critical (CVSS 9.8): A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code…
CVE-2025-41375 — Critical (CVSS 9.8): SQL Injection vulnerability in Limesurvey v2.65.1+170522. This vulnerability allows an attacker to retrieve, create,…
CVE-2022-48008 — Critical (CVSS 9.8): An arbitrary file upload vulnerability in the plugin manager of LimeSurvey v5.4.15 allows attackers to execute…
CVE-2019-25019 — Critical (CVSS 9.8): LimeSurvey before 4.0.0-RC4 allows SQL injection via the participant model.
CVE-2020-11455 — Critical (CVSS 9.8): LimeSurvey before 4.1.12+200324 contains a path traversal vulnerability in…
CVE-2019-16184 — Critical (CVSS 9.8): A CSV injection vulnerability was found in Limesurvey before 3.17.14 that allows survey participants to inject commands…

All CVEs affecting Limesurvey →

Other CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities

CVE-2026-24816 — Critical (CVSS 10.0): Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in datavane tis…
CVE-2018-20784 — Critical (CVSS 9.8): In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a…
CVE-2017-12997 — Critical (CVSS 9.8): The LLDP parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in…
CVE-2017-12995 — Critical (CVSS 9.8): The DNS parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-domain.c:ns_print().
CVE-2017-12990 — Critical (CVSS 9.8): The ISAKMP parser in tcpdump before 4.9.2 could enter an infinite loop due to bugs in print-isakmp.c, several functions.
CVE-2026-31448 — Critical (CVSS 9.4): In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual…

Browse all CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities →