Router memory corruption via unchecked NBNS copy
Published Apr 26, 2026 · Updated Apr 26, 2026
Stack-based buffer overflow in D-Link DIR-825 3.00b32 allows remote attackers to corrupt router memory via crafted NBNS traffic. NMBD_process in nmbd copies attacker-controlled NetBIOS Name Service data into a fixed-size stack buffer without validating its length. No authentication or user interaction is required, but the attacker must share the local network; the public record does not distinguish a crash from code execution.
Summary
What happened
Stack-based buffer overflow in D-Link DIR-825 3.00b32 allows remote attackers to corrupt router memory via crafted NBNS traffic. NMBD_process in nmbd copies attacker-controlled NetBIOS Name Service data into a fixed-size stack buffer without validating its length. No authentication or user interaction is required, but the attacker must share the local network; the public record does not distinguish a crash from code execution.
The record
- CVE
- CVE-2026-7068
- Published
- Apr 26, 2026
- Updated
- Apr 26, 2026
- Vendor
- D-Link
- Product
- DIR-825
- Classifications
- CWE-120, CWE-119, T1190
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 26, 2026CVE publishedPublication date reported by the CVE source.
- Apr 26, 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=3.00b32
What conditions does exploitation require?
What is affected?
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
- DIR-825 nmbd NetBIOS Name Service stack-based buffer overflow proof of conceptproof of concept · unverified
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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