CVE-2026-75877Public exploitNetwork attack vector

Memory corruption via overlong password fields

Published Aug 18, 2026 · Updated Aug 19, 2026

Stack-based buffer overflow in alphapd in TRENDnet TV-IP751WIC 11.03.03 allows attackers to crash the device via password fields. The referenced submission package says alphapd reads AdminPassword, PPPoEPassword, DDNSPassword, EmailPassword, FTPPassword, and related credentials with websGetVar() or nvram_bufget() and copies them into fixed-size stack buffers without length checks across multiple CGI handlers. The published PoC sends oversized values to /cgi-bin/admin endpoints and demonstrates overflow or crash behavior; VulDB's CVSS marks the issue PR:L, while the submission package states initial-setup devices may expose the same paths without an administrator password.

CVSS severity9.9
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in alphapd in TRENDnet TV-IP751WIC 11.03.03 allows attackers to crash the device via password fields. The referenced submission package says alphapd reads AdminPassword, PPPoEPassword, DDNSPassword, EmailPassword, FTPPassword, and related credentials with websGetVar() or nvram_bufget() and copies them into fixed-size stack buffers without length checks across multiple CGI handlers. The published PoC sends oversized values to /cgi-bin/admin endpoints and demonstrates overflow or crash behavior; VulDB's CVSS marks the issue PR:L, while the submission package states initial-setup devices may expose the same paths without an administrator password.

The record

CVE
CVE-2026-75877
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
TRENDnet
Product
TV-IP751WIC
Classifications
CWE-121, CWE-119, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.03.03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TRENDnet · TV-IP751WICversion=11.03.03

Published CVSS scores

9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
9.9VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.6VulDBCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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