Cyber Resilience

CVE-2023-33485

HighPublic PoC

Published: 31 May 2023

Published
31 May 2023
Modified
10 January 2025
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0067 71.9th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-33485 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Totolink X5000R Firmware. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 28.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

TOTOLINK X5000R V9.1.0u.6118_B20201102 and V9.1.0u.6369_B20230113 contains a post-authentication buffer overflow via parameter sPort/ePort in the addEffect function.

CWE(s)
CWE-787

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

totolink
x5000r firmware
9.1.0u.6118_b20201102, 9.1.0u.6369_b20230113

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References