Unauthenticated service crash via unbounded stack formatting
Published Jun 9, 2026 · Updated Jun 9, 2026
Stack-based buffer overflows in Tenda G0 15.11.0.5 allow remote attackers to crash the HTTP service via crafted qqStr or markStr values. The cited analysis shows Saveqqlist appending an attacker-controlled value to a fixed stack buffer with sprintf after the L7Im handler reads qqStr or markStr. No authentication or user interaction is required, but the sole technical reference identifies PW201A 1.0.5 rather than the G0 model and version named by the CVE record.
Summary
What happened
Stack-based buffer overflows in Tenda G0 15.11.0.5 allow remote attackers to crash the HTTP service via crafted qqStr or markStr values. The cited analysis shows Saveqqlist appending an attacker-controlled value to a fixed stack buffer with sprintf after the L7Im handler reads qqStr or markStr. No authentication or user interaction is required, but the sole technical reference identifies PW201A 1.0.5 rather than the G0 model and version named by the CVE record.
The record
- CVE
- CVE-2026-36805
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- SemVulLLM L7Im crafted-request proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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