How severe is CVE-2026-3815?

CVE-2026-3815 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3815 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3815?

CVE-2026-3815 affects Utt 810g Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3815?

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-2026-3815 have an EU (EUVD) identifier?

Yes. CVE-2026-3815 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10322.

When was CVE-2026-3815 published?

CVE-2026-3815 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2026-3815

CVE-2026-3815 is a high-severity vulnerability in Utt 810g Firmware with a CVSS 3.x base score of 8.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10322
Weakness: CWE-119
Affected product: Utt 810g Firmware
Published: 2026-03-09
Last modified: 2026-06-17

Description

A weakness has been identified in UTT HiPER 810G up to 1.7.7-1711. This affects the function strcpy of the file /goform/formApMail. Executing a manipulation can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

Frequently asked questions

What is CVE-2026-3815?: A weakness has been identified in UTT HiPER 810G up to 1.7.7-1711. This affects the function strcpy of the file /goform/formApMail. Executing a manipulation can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.
How severe is CVE-2026-3815?: CVE-2026-3815 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3815 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3815?: CVE-2026-3815 affects Utt 810g Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3815?: 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-2026-3815 have an EU (EUVD) identifier?: Yes. CVE-2026-3815 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10322.
When was CVE-2026-3815 published?: CVE-2026-3815 was published on 2026-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:utt:810g_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Utt 810g Firmware

CVE-2026-3814 — High (CVSS 8.8): A security flaw has been discovered in UTT HiPER 810G up to 1.7.7-1711. Affected by this issue is the function strcpy…
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