Service crash via unchecked SSH port copy
Published Feb 3, 2026 · Updated Feb 3, 2026
Stack buffer overflow in TP-Link Archer AX53 v1.0 through 1.3.1 Build 20241120 allows adjacent attackers to crash tdpServer. The SSH port update path passes an attacker-controlled ssh_port string through atoi, then copies the full string into an eight-byte stack buffer with strcpy. Exploitation requires adjacent-network access and low privileges; the resulting stack corruption interrupts the service and provides a path to arbitrary code execution.
Summary
What happened
Stack buffer overflow in TP-Link Archer AX53 v1.0 through 1.3.1 Build 20241120 allows adjacent attackers to crash tdpServer. The SSH port update path passes an attacker-controlled ssh_port string through atoi, then copies the full string into an eight-byte stack buffer with strcpy. Exploitation requires adjacent-network access and low privileges; the resulting stack corruption interrupts the service and provides a path to arbitrary code execution.
The record
- CVE
- CVE-2025-62673
- Published
- Feb 3, 2026
- Updated
- Feb 3, 2026
- Vendor
- TP-Link Systems Inc.
- Product
- Archer AX53
- Classifications
- CWE-122, CWE-121, CAPEC-100, T1210
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 3, 2026CVE publishedPublication date reported by the CVE source.
- Feb 3, 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.
- Affected versionversion=0 <=1.3.1 Build 20241120
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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