Authenticated command execution via unsanitized FOTA URL
Published Dec 29, 2025 · Updated Dec 29, 2025
Command injection in D-Link DWR-M920 1.1.50 and earlier allows remote authenticated users to execute arbitrary system commands. The sub_4155B4 handler reads fota_url from POST data, interpolates it into buffer v6 with sprintf, and passes the resulting string to system without command neutralization. A valid web-interface session cookie is required; injected shell metacharacters run commands on the router, while oversized input can also crash the service.
Summary
What happened
Command injection in D-Link DWR-M920 1.1.50 and earlier allows remote authenticated users to execute arbitrary system commands. The sub_4155B4 handler reads fota_url from POST data, interpolates it into buffer v6 with sprintf, and passes the resulting string to system without command neutralization. A valid web-interface session cookie is required; injected shell metacharacters run commands on the router, while oversized input can also crash the service.
The record
- CVE
- CVE-2025-15191
- Published
- Dec 29, 2025
- Updated
- Dec 29, 2025
- Vendor
- D-Link
- Product
- DWR-M920
- Classifications
- CWE-74, CWE-77, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 29, 2025CVE publishedPublication date reported by the CVE source.
- Dec 29, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.1.0
- Affected versionversion=1.1.1
- Affected versionversion=1.1.10
- Affected versionversion=1.1.11
- Affected versionversion=1.1.12
- Affected versionversion=1.1.13
- Affected versionversion=1.1.14
- Affected versionversion=1.1.15
- Affected versionversion=1.1.16
- Affected versionversion=1.1.17
- Affected versionversion=1.1.18
- Affected versionversion=1.1.19
- Affected versionversion=1.1.2
- Affected versionversion=1.1.20
- Affected versionversion=1.1.21
- Affected versionversion=1.1.22
- Affected versionversion=1.1.23
- Affected versionversion=1.1.24
- Affected versionversion=1.1.25
- Affected versionversion=1.1.26
- Affected versionversion=1.1.27
- Affected versionversion=1.1.28
- Affected versionversion=1.1.29
- Affected versionversion=1.1.3
- Affected versionversion=1.1.30
- Affected versionversion=1.1.31
- Affected versionversion=1.1.32
- Affected versionversion=1.1.33
- Affected versionversion=1.1.34
- Affected versionversion=1.1.35
- Affected versionversion=1.1.36
- Affected versionversion=1.1.37
- Affected versionversion=1.1.38
- Affected versionversion=1.1.39
- Affected versionversion=1.1.4
- Affected versionversion=1.1.40
- Affected versionversion=1.1.41
- Affected versionversion=1.1.42
- Affected versionversion=1.1.43
- Affected versionversion=1.1.44
- Affected versionversion=1.1.45
- Affected versionversion=1.1.46
- Affected versionversion=1.1.47
- Affected versionversion=1.1.48
- Affected versionversion=1.1.49
- Affected versionversion=1.1.5
- Affected versionversion=1.1.50
- Affected versionversion=1.1.6
- Affected versionversion=1.1.7
- Affected versionversion=1.1.8
- Affected versionversion=1.1.9
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
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
- formLtefotaUpgradeFibocom command-injection PoCfunctional · demonstrated
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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