VulnerabilityPublished 4 Dec 2023Updated 29 May 2025

CVE-2023-42698: Unisoc (Shanghai) Technologies SC7731E/SC9832E/SC9863A/T310/T606/T612/T616/T610/T618/T760/T770/T820/S8000 · Missing Authorization

Affects Unisoc (Shanghai) Technologies SC7731E/SC9832E/SC9863A/T310/T606/T612/T616/T610/T618/T760/T770/T820/S8000Source CVE Database V5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Dec 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

To mitigate CVE-2023-42698, European organizations should: 1) Ensure mobile device management (MDM) solutions enforce strict app installation policies, restricting installation to trusted sources and blocking potentially malicious applications that could exploit this vulnerability. 2) Monitor and audit installed applications regularly for suspicious behavior or unauthorized permission requests. 3) Encourage users to update their devices promptly once Unisoc or device manufacturers release security patches addressing this vulnerability. 4) Where possible, prefer devices with chipsets from vendors with a strong security update track record or consider alternative hardware for high-security environments. 5) Implement endpoint security solutions capable of detecting anomalous local access patterns or unauthorized attempts to read permission usage data. 6) Educate users about the risks of installing untrusted apps and the importance of device hygiene, especially in corporate contexts. Since no patches are currently linked, organizations should maintain close communication with device vendors and Unisoc for timely updates.

Description

In omacp service, there is a possible way to write permission usage records of an app due to a missing permission check. This could lead to local information disclosure with no additional execution privileges needed

Impact

For European organizations, the impact of CVE-2023-42698 is primarily related to privacy and confidentiality risks on mobile devices using affected Unisoc chipsets. Organizations relying on Android devices with these chipsets may face unauthorized local disclosure of sensitive permission usage data, which could reveal user behavior patterns, app usage, or security configurations. This information leakage could facilitate more sophisticated attacks, social engineering, or targeted exploitation of other vulnerabilities. While the vulnerability does not allow remote exploitation or direct compromise of device integrity or availability, it poses a risk to data confidentiality, especially in environments where mobile devices handle sensitive corporate information or are used for secure communications. The risk is heightened in sectors with strict data protection regulations such as GDPR, where unauthorized data exposure—even local and indirect—can lead to compliance issues and reputational damage. However, the requirement for local access and low privileges limits the attack surface primarily to scenarios where malicious apps are installed or insider threats exist.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

unisoc.com/en_us/secy/announcementDetail/https://www.unisoc.com/en_us/secy/announcementDetail/1731138365803266049 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 8 Jul 2025, 02:25 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

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