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CVE-2023-4911

HighCVSS 7.8 / 10
Published Oct 3, 2023·Last modified Apr 16, 2026
Affected Components(0)

No affected components available

Description

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

Risk Scores
Base Score
7.8

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.8

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
81.42%

The exploit probability is critical. The vulnerability is very likely to be exploited in the next 30 days.

Exploit
22 exploits

22 exploits found for this vulnerability.

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