What is the CVSS score of CVE-2017-2699?

CVE-2017-2699 has a CVSS 3.0 base score of 7.8 (High). CVSS vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Mate S Firmware CVE-2017-2699

HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2017-11-22 psirt@huawei.com

RCE File Upload Huawei Mate S Firmware Honor 7 Firmware Lyo L21 Firmware

7.8

CVSS 3.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-434 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V5 - File Handling File type validation, storage isolation MITRE ATT&CK 2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. EPSS exploitation probability: 0.16%.
Exploit ScenarioDerived	A local attacker with access to the system could upload malicious files that can be executed on the server. No authentication is required to exploit this vulnerability.

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

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

The Huawei Themes APP in versions earlier than PLK-UL00C17B385, versions earlier than CRR-L09C432B380, versions earlier than LYO-L21C577B128 has a privilege elevation vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

Affects your stack

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

Technical ContextAI · show details

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. The Huawei Themes APP in versions earlier than PLK-UL00C17B385, versions earlier than CRR-L09C432B380, versions earlier than LYO-L21C577B128 has a privilege elevation vulnerability. An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code. Affected products include: Huawei Honor 7 Firmware, Huawei Mate S Firmware, Huawei Lyo-L21 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

The Huawei Themes APP in versions earlier than PLK-UL00C17B385, versions earlier than CRR-L09C432B380, versions earlier than LYO-L21C577B128 has a privilege elevation vulnerability. An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code.

Threat Intelligence Overview

EPSS Score

0.2%

Top 64% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 No

EPSS 0.2%

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.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:o:huawei:honor_7_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:mate_s_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:lyo-l21_firmware:*:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170222-01-theme-en REF http://www.securityfocus.com/bid/96424

Search Externally

GitHub PoC

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