What is the CVSS score of CVE-2026-2847?

CVE-2026-2847 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Is there a public PoC exploit available for CVE-2026-2847?

Yes, a public proof-of-concept exploit is available for CVE-2026-2847. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2026-2847?

Within 24 hours: Inventory all UTT HiPER 520 devices running version 1.7.7-160105 and isolate them from untrusted networks. Within 7 days: Implement network segmentation to restrict access to the web management interface (/goform/formReleaseConnect) to authorized administrative personnel only, and deploy WAF rules to block malicious requests. Within 30 days: Contact UTT vendor for patch availability and timeline; if unavailable, evaluate replacement with alternative equipment or implement continuous monitoring for exploitation attempts.

520 Firmware CVE-2026-2847

HIGH

Command Injection (CWE-77)

2026-02-20 cna@vuldb.com

Command Injection 520 Firmware Utt

7.2

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Send crafted HTTP request to /goform/formReleaseConnect
Exploit

Inject OS commands in Isp_Name parameter
Impact

Execute arbitrary commands as web server user

Vulnerability Assessment

Weakness	CWE CWE-77 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Command injection prevention MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	UTT HiPER 520 version 1.7.7-160105 with Web Management Interface enabled and accessible. Attacker requires high-privilege authentication credentials to access the vulnerable endpoint /goform/formReleaseConnect.
Impact	CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, os command injection.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Remote code execution in UTT HiPER 520 Firmware 1.7.7-160105 allows unauthenticated attackers to inject arbitrary OS commands through the Isp_Name parameter in the web management interface. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker can achieve full system compromise by sending a specially crafted request to the /goform/formReleaseConnect endpoint.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:04 CVSS 7.2

A vulnerability was detected in UTT HiPER 520 1.7.7-160105. Affected is the function sub_44EFB4 of the file /goform/formReleaseConnect of the component Web Management Interface. [CVSS 7.2 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-77 (Command Injection). Affects 520 Firmware. A vulnerability was detected in UTT HiPER 520 1.7.7-160105. Affected is the function sub_44EFB4 of the file /goform/formReleaseConnect of the component Web Management Interface. The manipulation of the argument Isp_Name results in os command injection. The attack can be launched remotely. The exploit is now public and may be used.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.2 HIGH

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 24, 2026 - 15:25 vuln.today

Public exploit code

CVE Published

Feb 20, 2026 - 16:22 nvd

HIGH 7.2

DescriptionCVE.org

A vulnerability was detected in UTT HiPER 520 1.7.7-160105. Affected is the function sub_44EFB4 of the file /goform/formReleaseConnect of the component Web Management Interface. The manipulation of the argument Isp_Name results in os command injection. The attack can be launched remotely. The exploit is now public and may be used.

Executive ViewAI

Why It Matters

A high-severity vulnerability in UTT HiPER 520 devices exposes the web management interface to potential unauthorized access and control. Organizations using this equipment face immediate risk of network compromise, as public exploits are available and no vendor patch has been released.

Business Impact: High

Compensating Controls

Implement network access control lists (ACLs) to restrict web management interface access by IP address; deploy Web Application Firewall (WAF) rules to monitor and block requests to /goform/formReleaseConnect endpoint; isolate affected devices on a separate management VLAN; disable remote access to web management interface if not operationally required; enable detailed logging and alerting on the component; consider temporary device shutdown if not critical to operations pending patch release.

Threat Intelligence Overview

EPSS Score

0.5%

Top 36% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.5%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.