Is CVE-2022-22707 actively exploited?

No active exploitation of CVE-2022-22707 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-22707 be exploited remotely?

Yes. CVE-2022-22707 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-22707?

CVE-2022-22707 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2022-22707

CWE-787Published: January 6, 2022· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

NVD Source

Technical Analysis

CVE-2022-22707 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.