Unisoc T8300 Modem IMS denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Unisoc SC7731E, SC9832E, SC9863A, T310, T610, T618, T7200, T7225, T7250, T7255, T7280, T7300, T8100, T9100, T8200 and T8300. The affected element is an unknown function of the component Modem IMS. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2025-71255. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Unisoc SC7731E, SC9832E, SC9863A, T310, T610, T618, T7200, T7225, T7250, T7255, T7280, T7300, T8100, T9100, T8200 and T8300. It has been rated as critical. Affected by this issue is an unknown code block of the component Modem IMS. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

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

The advisory is shared for download at unisoc.com. This vulnerability is handled as CVE-2025-71255 since 03/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

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-2025-209655) and CERT Bund (WID-SEC-2026-1772). Once again VulDB remains the best source for vulnerability data.

Affected

  • 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

03/02/2026 CVE reserved
05/06/2026 +64 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
07/21/2026 +76 days VulDB entry last update

Sourcesinfo

Advisory: unisoc.com
Status: Confirmed

CVE: CVE-2025-71255 (🔒)
GCVE (CVE): GCVE-0-2025-71255
GCVE (VulDB): GCVE-100-361268
EUVD: 🔒
CERT Bund: WID-SEC-2026-1772 - Google Android: Mehrere Schwachstellen

Entryinfo

Created: 05/06/2026 07:50
Updated: 07/21/2026 08:14
Changes: 05/06/2026 07:50 (62), 05/06/2026 08:17 (1), 06/03/2026 02:52 (6), 07/21/2026 08:14 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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