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%.

Which versions of 520 Firmware are affected by CVE-2026-2847?

A high-severity vulnerability in UTT HiPER 520 devices exposes the web management interface to potential unauthorized access and control.

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

7.2

CVSS 3.1 · NVD

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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

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.

AnalysisAI

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send crafted HTTP request to /goform/formReleaseConnect

Exploit

Inject OS commands in Isp_Name parameter

Impact

Execute arbitrary commands as web server user

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 AssessmentAI

Exploitation	UTT HiPER 520 version 1.7.7-160105 with Web Management Interface enabled and accessible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.2 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, os command injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all UTT HiPER 520 devices running version 1.7.7-160105 and isolate them from untrusted networks. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-2847 vulnerability details – vuln.today

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520 Firmware CVE-2026-2847

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

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External POC / Exploit Code