CVE-2026-75976

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.3% of scored records. A rank, not a probability.

NVD base score

8.6 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-08-25.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-18 23:30Z16 DAYS AGO

Last updated

2026-08-25 01:47Z10 DAYS AGO

Reserved

2026-08-18

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Critical (CVSS 9.4)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

a99b9af2edce3c40d680b539de90c2fc440696672696549a9af40d328c12db8f

• vuldb.comVDB-391892 | TRENDnet TEW-823DRU NVRAM wan.cgi strcpy stack-based overflowhttps://vuldb.com/vuln/391892vdb-entrytechnical-description
• vuldb.comVDB-391892 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/391892/ctisignaturepermissions-required
• vuldb.comCVE-2026-75976 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-75976third-party-advisory
• vuldb.comSubmit #877796 | TRENDnet TEW-823DRU TEW-823DRU Stack-based Buffer Overflowhttps://vuldb.com/submit/877796third-party-advisory
• github.comhttps://github.com/meishigana/CVE/tree/main/team15_20260702/10_823dru-rc-bofrelated
• github.comhttps://github.com/meishigana/CVE/blob/main/team15_20260702/10_823dru-rc-bof/poc/poc-rc-overflow.pyexploit