CVE-2025-27921
CVE-2025-27921 is a medium-severity vulnerability in Srimax Output Messenger with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-13454
- Weakness: CWE-79
- Affected product: Srimax Output Messenger
- Published:
- Last modified:
Description
A reflected cross-site scripting (XSS) vulnerability was discovered in Output Messenger before 2.0.63, where unsanitized input could be injected into the web application’s response. This vulnerability occurs when user-controlled input is reflected back into the browser without proper sanitization or encoding.
Frequently asked questions
- What is CVE-2025-27921?
- A reflected cross-site scripting (XSS) vulnerability was discovered in Output Messenger before 2.0.63, where unsanitized input could be injected into the web application’s response. This vulnerability occurs when user-controlled input is reflected back into the browser without proper sanitization or encoding.
- How severe is CVE-2025-27921?
- CVE-2025-27921 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-27921 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-27921?
- CVE-2025-27921 affects Srimax Output Messenger. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-27921?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-27921 have an EU (EUVD) identifier?
- Yes. CVE-2025-27921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13454.
- When was CVE-2025-27921 published?
- CVE-2025-27921 was published on 2025-05-05 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:srimax:output_messenger:*:*:*:*:*:*:*:*
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