An issue was discovered in atftpd in atftp 0.7.1.
Priority LOW 31CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.
Why it matters now
EPSS 0.02098 81st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:atftp_project:atftp:0.7.1:*:*:*:*:*:*:* | 0.7.1 | Vulnerable | Atftp Project |
- cpe:2.3:a:atftp_project:atftp:0.7.1:*:*:*:*:*:*:* Versions 0.7.1 Vulnerable ·Atftp Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-11366
- 2026-10-03 Alias added: GHSA-4hq6-rhmw-hgw9
References
Advisory 3
More Atftp Project Atftp vulnerabilities
- TI-2019-08487 An issue was discovered in atftpd in atftp 0.7.1. CVSS 3.0CRITICAL 9.8
- TI-2021-17908 tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling… CVSS 3.1HIGH 7.5
- TI-2020-04964 Reachable assertion in atftpd CVSS 3.1HIGH 7.5
- TI-2021-21442 options.c in atftp before 0.7.5 reads past the end of an array, and consequently… CVSS 3.1MEDIUM 5.3
Sources
- CVE-2019-11366 · CVE Program
- CVE-2019-11366 · NVD
- FIRST EPSS
- GHSA-4hq6-rhmw-hgw9 · GitHub Advisory Database · CC BY 4.0
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