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Vulnerability details: VCID-gn1p-j2jj-8fby
Vulnerability ID VCID-gn1p-j2jj-8fby
Aliases CVE-2025-49630
Summary In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-617 Reachable Assertion
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-49630.json
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00249 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00347 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00347 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00347 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00347 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00362 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00416 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
epss 0.00416 https://api.first.org/data/v1/epss?cve=CVE-2025-49630
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://httpd.apache.org/security/vulnerabilities_24.html
ssvc Track https://httpd.apache.org/security/vulnerabilities_24.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-49630.json
https://api.first.org/data/v1/epss?cve=CVE-2025-49630
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-49630
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://httpd.apache.org/security/vulnerabilities_24.html
2374578 https://bugzilla.redhat.com/show_bug.cgi?id=2374578
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
CVE-2025-49630 https://httpd.apache.org/security/json/CVE-2025-49630.json
CVE-2025-49630 https://nvd.nist.gov/vuln/detail/CVE-2025-49630
RHSA-2025:13680 https://access.redhat.com/errata/RHSA-2025:13680
RHSA-2025:13681 https://access.redhat.com/errata/RHSA-2025:13681
RHSA-2025:14625 https://access.redhat.com/errata/RHSA-2025:14625
RHSA-2025:14983 https://access.redhat.com/errata/RHSA-2025:14983
RHSA-2025:15123 https://access.redhat.com/errata/RHSA-2025:15123
RHSA-2025:15516 https://access.redhat.com/errata/RHSA-2025:15516
RHSA-2025:15619 https://access.redhat.com/errata/RHSA-2025:15619
RHSA-2025:15684 https://access.redhat.com/errata/RHSA-2025:15684
RHSA-2025:15698 https://access.redhat.com/errata/RHSA-2025:15698
RHSA-2025:15725 https://access.redhat.com/errata/RHSA-2025:15725
RHSA-2025:15726 https://access.redhat.com/errata/RHSA-2025:15726
RHSA-2025:15727 https://access.redhat.com/errata/RHSA-2025:15727
USN-7639-1 https://usn.ubuntu.com/7639-1/
USN-7639-2 https://usn.ubuntu.com/7639-2/
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://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-49630.json
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://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://httpd.apache.org/security/vulnerabilities_24.html
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-07-11T16:06:07Z/ Found at https://httpd.apache.org/security/vulnerabilities_24.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.481
EPSS Score 0.00249
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:29:10.109788+00:00 Apache HTTPD Importer Import https://httpd.apache.org/security/json/CVE-2025-49630.json 37.0.0