http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow (CVE-2026-75118) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-75118

http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow

Answer in brief

CVE-2026-75118 records a Unknown severity vulnerability in http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./TL-MR100 v3.20 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link Systems Inc./TL-MR100 v3.20 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TP-Link Systems Inc./TL-MR100 v3.20generic	>=0 <(EU)_1.3.0 Build 260609	(EU)_1.3.0 Build 260609

Recommended response

Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./TL-MR100 v3.20.
Review the reported fix. Update TP-Link Systems Inc./TL-MR100 v3.20 to (EU)_1.3.0 Build 260609 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution. Successful exploitation can overwrite saved control-flow data on the httpd process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.

Quoted source text, attributed separately from HOL analysis.