CVE-2023-33670
CWE-787Published: June 2, 2023· Updated: Jun 17, 2026
Official Description
Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the time parameter in the sub_4a79ec function.
Risk Analysis
A stack-based buffer overflow exists in Tenda AC8 firmware, triggered via the time parameter. This vulnerability allows remote attackers to potentially gain control over the device. The critical CVSS score emphasizes the high risk posed by this flaw.
No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable.
Install the latest firmware update from the vendor. Implement network-level access controls to limit exposure of the device's management interface.
Technical Analysis
CVE-2023-33670 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-33670 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts