How severe is CVE-2025-27287?

CVE-2025-27287 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-27287 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27287?

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

Does CVE-2025-27287 have an EU (EUVD) identifier?

Yes. CVE-2025-27287 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11621.

When was CVE-2025-27287 published?

CVE-2025-27287 was published on 2025-04-17 and last updated on 2026-06-17.

CVE-2025-27287

CVE-2025-27287 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11621
Weakness: CWE-502
Published: 2025-04-17
Last modified: 2026-06-17

Description

Deserialization of Untrusted Data vulnerability in ssvadim SS Quiz ssquiz allows Object Injection.This issue affects SS Quiz: from n/a through <= 2.0.5.

Frequently asked questions

What is CVE-2025-27287?: Deserialization of Untrusted Data vulnerability in ssvadim SS Quiz ssquiz allows Object Injection.This issue affects SS Quiz: from n/a through <= 2.0.5.
How severe is CVE-2025-27287?: CVE-2025-27287 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-27287 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-27287?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-27287 have an EU (EUVD) identifier?: Yes. CVE-2025-27287 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11621.
When was CVE-2025-27287 published?: CVE-2025-27287 was published on 2025-04-17 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/ssquiz/vulnerability/wordpress-ss-quiz-plugin-2-0-5-php-object-injection-vulnerability?_s_id=cve

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