CVE-2025-11947Public exploit

Local memory corruption via undersized group buffer

Published Oct 19, 2025 · Updated Oct 19, 2025

Heap-based buffer overflow in Bftpd 6.0 through 6.2 allows local users to corrupt process memory through crafted group configuration data. During group expansion, options.c allocates temp_members with strdup, and expand_groups appends a comma with strcat without reserving space for it. Exploitation requires low-privileged local access and high-complexity conditions; the public record establishes neither a crash nor code execution.

CVSS severity4.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Bftpd 6.0 through 6.2 allows local users to corrupt process memory through crafted group configuration data. During group expansion, options.c allocates temp_members with strdup, and expand_groups appends a comma with strcat without reserving space for it. Exploitation requires low-privileged local access and high-complexity conditions; the public record establishes neither a crash nor code execution.

The record

CVE
CVE-2025-11947
Published
Oct 19, 2025
Updated
Oct 19, 2025
Vendor
BFTPD Project
Product
Bftpd
Classifications
CWE-122, CWE-119
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 2025Record 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.

  1. Affected versionversion=6.0
  2. Affected versionversion=6.1
  3. Affected versionversion=6.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

BFTPD Project · Bftpdversion=6.0; version=6.1; version=6.2

Published CVSS scores

3.5VulDBAV:L/AC:H/Au:S/C:P/I:P/A:P
4.5VulDBCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
1.1VulDBCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

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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