CVE-2026-21555
In modem, there is a possible improper input validation. This could lead to remote denial of...
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
- Record
CVE-2026-21555- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2026-52220
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
- Record
EUVD-2026-52220- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-39c3-6p4j-vwgv
In modem, there is a possible improper input validation. This could lead to remote denial of...
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
- Record
GHSA-39c3-6p4j-vwgv- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
- Record
CVE-2026-21555- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21555 is a high vulnerability (CVSS 7.5) in Unisoc (shanghai) Technologies Co., Ltd. Udx710, published August 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. No source names a fixed version.