SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-1000409

A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable.

EXPLOIT ✓HIGH 7.0EPSS 1.21%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 1.2%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.

Description

A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

CVSS 3.0
7.0 HIGHCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.21% probability · 68th percentile
Public exploits
1 in Exploit-DB · verified · first 13 December 2017
CISA KEV
Not listed
Weakness
CWE-119
Affected
gnu/glibc
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 1.21%27 October 202627 October 2026

EPSS 1.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-43331source ↗GNU C Library Dynamic Loader glibc ld.so - Memory Leak / Buffer Overflowlinux · Qualys Corporationlocal13 December 2017yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.