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Vulnerability details: VCID-qjwj-zmpw-zqcr
Vulnerability ID VCID-qjwj-zmpw-zqcr
Aliases CVE-2022-37797
Summary In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
epss 0.00166 https://api.first.org/data/v1/epss?cve=CVE-2022-37797
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2022-37797
archlinux Unknown https://security.archlinux.org/AVG-2822
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2022-37797
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-37797
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41556
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2022/10/msg00002.html
https://redmine.lighttpd.net/issues/3165
https://security.gentoo.org/glsa/202210-12
https://www.debian.org/security/2022/dsa-5243
AVG-2822 https://security.archlinux.org/AVG-2822
cpe:2.3:a:lighttpd:lighttpd:1.4.65:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:lighttpd:lighttpd:1.4.65:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2022-37797 https://nvd.nist.gov/vuln/detail/CVE-2022-37797
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2022-37797
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.38398
EPSS Score 0.00166
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:31:51.482567+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2022-37797 37.0.0