Unisoc T750/T765/T760/T770/T820/S8000/T8300/T9300 Modem denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Unisoc T750, T765, T760, T770, T820, S8000, T8300 and T9300. The affected element is an unknown function of the component Modem. Performing a manipulation results in denial of service. This vulnerability was named CVE-2025-31717. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Unisoc T750, T765, T760, T770, T820, S8000, T8300 and T9300. It has been classified as critical. This affects an unknown functionality of the component Modem. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

In modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed.

The advisory is shared at unisoc.com. This vulnerability is uniquely identified as CVE-2025-31717 since 04/01/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-33803) and CERT Bund (WID-SEC-2025-2711). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Lenovo BIOS
  • Lenovo Computer
  • Google Android

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Unisoc): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/01/2025 CVE reserved
10/11/2025 +193 days Advisory disclosed
10/11/2025 +0 days VulDB entry created
12/19/2025 +69 days VulDB entry last update

Sourcesinfo

Advisory: unisoc.com
Status: Confirmed

CVE: CVE-2025-31717 (🔒)
GCVE (CVE): GCVE-0-2025-31717
GCVE (VulDB): GCVE-100-327993
EUVD: 🔒
CERT Bund: WID-SEC-2025-2711 - Android Patchday Dezember 2025: Mehrere Schwachstellen

Entryinfo

Created: 10/11/2025 10:02
Updated: 12/19/2025 04:07
Changes: 10/11/2025 10:02 (62), 10/12/2025 05:23 (1), 10/15/2025 09:48 (5), 12/19/2025 04:07 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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