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CVE-2024-38440

22
FAUCET Score

CVE-2024-38440 is an off-by-one heap-based buffer overflow vulnerability in Netatalk versions prior to 3.2.1, 2.4.1, and 3.1.19, specifically within the BN_bin2bn function during FPLoginExt operations. This flaw allows an unauthenticated attacker to trigger a Denial of Service (DoS) by sending specially crafted data, leading to a segmentation violation. With a CVSS score of 7.5 (HIGH), the vulnerability has a low attack complexity and does not require user interaction or privileges. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.4.1CPE matchmatch criteria
cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*
>= 3.0, < 3.1.19CPE matchmatch criteria
cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*
3.2.0CPE matchmatch criteria
cpe:2.3:a:netatalk:netatalk:3.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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 Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 30th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

githubpatch availablevia llm_extracted
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

githubllm-github-fba9b0b14ff45e60HIGH

AS-2024-006: Netatalk

Sep 27, 2024

References

lists.debian.org / debian-lts-announce/2024/11/msg00026.html
github.com / Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c
Product
github.com / Netatalk/netatalk/issues/1097
Not Applicable
github.com / Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5
ExploitVendor Advisory
netatalk.io / security/CVE-2024-38440
Vendor Advisory