CVE-2025-65288
CVE-2025-65288 is a medium-severity vulnerability in Mercurycom Mr816 Firmware with a CVSS 3.x base score of 6.5. 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-120.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-202295
- Weakness: CWE-120
- Affected product: Mercurycom Mr816 Firmware
- Published:
- Last modified:
Description
A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs when the device accepts and stores excessively long hostnames from LAN hosts without proper length validation. The affected code performs unchecked copies/concatenations into fixed-size buffers. A crafted long hostname can overflow the buffer, cause a crash (DoS) and potentially enabling remote code execution.
Frequently asked questions
- What is CVE-2025-65288?
- A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs when the device accepts and stores excessively long hostnames from LAN hosts without proper length validation. The affected code performs unchecked copies/concatenations into fixed-size buffers. A crafted long hostname can overflow the buffer, cause a crash (DoS) and potentially enabling remote code execution.
- How severe is CVE-2025-65288?
- CVE-2025-65288 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2025-65288 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-2025-65288?
- CVE-2025-65288 affects Mercurycom Mr816 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-65288?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-65288 have an EU (EUVD) identifier?
- Yes. CVE-2025-65288 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202295.
- When was CVE-2025-65288 published?
- CVE-2025-65288 was published on 2025-12-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427:*:*:*:*:*:*
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