What is the CVSS score of CVE-2021-41054?

CVE-2021-41054 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.6%.

Is there a public PoC exploit available for CVE-2021-41054?

Yes, a public proof-of-concept exploit is available for CVE-2021-41054. Prioritise patching immediately. EPSS: 2.6%.

Is there a patch available for CVE-2021-41054?

Yes, a patch is available for CVE-2021-41054. Update the affected software to the latest version immediately.

Atftp CVE-2021-41054

HIGH

Classic Buffer Overflow (CWE-120)

2021-09-13 cve@mitre.org

Buffer Overflow Atftp Debian Linux

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Sep 13, 2021 - 21:15 nvd

HIGH 7.5

DescriptionNVD

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.

AnalysisAI

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options. Affected products include: Atftp Project Atftp, Debian Debian Linux. Version information: through 0.7.4.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.