CVE-2026-3815: A weakness has been identified in UTT HiPER 810G up to 1.7.7-1711

Q: How do I fix CVE-2026-3815?

810g firmware: upgrade to newer than 1.7.7-171114. Exact commands for each OS are on this page.

Q: Is CVE-2026-3815 being exploited?

CVE-2026-3815 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-3815 affect?

CVE-2026-3815 affects 810g firmware. Severity is high (CVSS 8.8). 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 expl

Q: How urgent is CVE-2026-3815?

Priority 50/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-3815 is a high-severity flaw (CVSS 8.8) affecting 810g firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2026-03-09
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: utt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-09 11:16 UTCPublished CVE record published
2026-06-17 10:44 UTCUpdated Record last modified

utt 810g firmware UPGRADE

Affected: <= 1.7.7-171114

Fixed in: newer than 1.7.7-171114

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-3815?

810g firmware: upgrade to newer than 1.7.7-171114. Exact commands for each OS are on this page.

Is CVE-2026-3815 being exploited?

CVE-2026-3815 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-3815 affect?

CVE-2026-3815 affects 810g firmware. Severity is high (CVSS 8.8). 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 expl

How urgent is CVE-2026-3815?

Priority 50/100. High severity; Public exploit reference

Related CVEs

CVE-2026-3814 HIGH 8.8 UPGRADE A security flaw has been discovered in UTT HiPER 810G up to 1.7.7-1711
CVE-2026-3700 HIGH 8.8 UPGRADE A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114
CVE-2026-3699 HIGH 8.8 UPGRADE A security flaw has been discovered in UTT HiPER 810G up to 1.7.7-171114
CVE-2026-3698 HIGH 8.8 UPGRADE A vulnerability was identified in UTT HiPER 810G up to 1.7.7-171114
CVE-2026-31066 MEDIUM 4.5 UPGRADE UTT Aggressive HiPER 810G v3v1.7.7-171114 was discovered to contain a buffer overflow in the selDateType param

References

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