How severe is CVE-2025-59902?

CVE-2025-59902 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2025-59902 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59902?

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-2025-59902 have an EU (EUVD) identifier?

Yes. CVE-2025-59902 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206732.

When was CVE-2025-59902 published?

CVE-2025-59902 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2025-59902

CVE-2025-59902 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. 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-79.

Key facts

Severity: High (CVSS 4.0 base score 7.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206732
Weakness: CWE-79
Published: 2026-02-03
Last modified: 2026-06-17

Description

HTML injection vulnerability in NICE Chat. This vulnerability allows an attacker to inject and render arbitrary HTML content in email transcripts by modifying the 'firstName' and 'lastName' parameters during a chat session. The injected HTML is included in the body of the email sent by the system, which could enable phishing attacks, impersonation, or credential theft.

Frequently asked questions

What is CVE-2025-59902?: HTML injection vulnerability in NICE Chat. This vulnerability allows an attacker to inject and render arbitrary HTML content in email transcripts by modifying the 'firstName' and 'lastName' parameters during a chat session. The injected HTML is included in the body of the email sent by the system, which could enable phishing attacks, impersonation, or credential theft.
How severe is CVE-2025-59902?: CVE-2025-59902 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2025-59902 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-59902?: 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-2025-59902 have an EU (EUVD) identifier?: Yes. CVE-2025-59902 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206732.
When was CVE-2025-59902 published?: CVE-2025-59902 was published on 2026-02-03 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/html-injection-nice-chat

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