Skip to content
Noroxi
NVD / CVE Program· CNA apache

CVE-2025-23048: Apache HTTP Server: mod_ssl access control bypass with session resumption

Noroxi assessment

Priority: Monitor (action score 36/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 64.2% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: azl3 httpd 2.4.62-1 on Azure Linux 3.0 2.4.64-1; azl3 httpd 2.4.64-1 on Azure Linux 3.0 2.4.64-1; cbl2 httpd 2.4.62-1 on CBL Mariner 2.0 2.4.64-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to azl3 httpd 2.4.62-1 on Azure Linux 3.0 2.4.64-1; azl3 httpd 2.4.64-1 on Azure Linux 3.0 2.4.64-1; cbl2 httpd 2.4.62-1 on CBL Mariner 2.0 2.4.64-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.

CriticalCVSS 9.1 · v3.1—Proof of concept Fix available
Published
Jul 10, 2025
Updated
Jun 17, 2026
EPSS
1.0% · 64th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-23048

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for apache records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
apachehttp server

Using http server? Add it to your stack and be the first to know about CVEs like this one. (Apache HTTP)

Watch new CVEs for http server

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Is Apache HTTP Server on your server exposed to the internet?

The free port scanner finds the open ports on your server and matches the service versions it can read against known vulnerabilities. No account needed.

Run a port scan

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache http server2.4.35 and later · before 2.4.64

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache HTTP Server

    • 2.4.35 and later · up to and including 2.4.63affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10httpd-filesystembefore 2.4.63-1.el10_0.22.4.63-1.el10_0.2
AlmaLinux:10httpd-manualbefore 2.4.63-1.el10_0.22.4.63-1.el10_0.2
AlmaLinux:8httpdbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8httpd-develbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8httpd-filesystembefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8httpd-manualbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8httpd-toolsbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8mod_http2before 1.15.7-10.module_el8.10.0+4044+ea5f78b1.41.15.7-10.module_el8.10.0+4044+ea5f78b1.4
AlmaLinux:8mod_ldapbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8mod_mdbefore 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
AlmaLinux:8mod_mdbefore 1:2.0.8-8.module_el8.6.0+3031+fb177b091:2.0.8-8.module_el8.6.0+3031+fb177b09
AlmaLinux:8mod_proxy_htmlbefore 1:2.4.37-65.module_el8.10.0+4044+ea5f78b1.51:2.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8mod_sessionbefore 2.4.37-65.module_el8.10.0+4044+ea5f78b1.52.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:8mod_sslbefore 1:2.4.37-65.module_el8.10.0+4044+ea5f78b1.51:2.4.37-65.module_el8.10.0+4044+ea5f78b1.5
AlmaLinux:9httpdbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9httpd-corebefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9httpd-develbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9httpd-filesystembefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9httpd-manualbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9httpd-toolsbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9mod_ldapbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9mod_luabefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4
AlmaLinux:9mod_proxy_htmlbefore 1:2.4.62-4.el9_6.41:2.4.62-4.el9_6.4
AlmaLinux:9mod_sessionbefore 2.4.62-4.el9_6.42.4.62-4.el9_6.4

+96

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-42013Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)KEV
    99Now
  • CVE-2021-41773Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49KEV
    99Now
  • CVE-2024-38475Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.KEV
    96Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-43394Jul 10, 2025 · Apache HTTP Server: SSRF on Windows due to UNC paths
    30Monitor
  • ← EarlierCVE-2024-47252Jul 10, 2025 · Apache HTTP Server: mod_ssl error log variable escaping
    30Monitor
  • Later →CVE-2025-49630Jul 10, 2025 · Apache HTTP Server: mod_proxy_http2 denial of service
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 httpd 2.4.62-1 on Azure Linux 3.02.4.64-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 httpd 2.4.64-1 on Azure Linux 3.02.4.64-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 httpd 2.4.62-1 on CBL Mariner 2.02.4.64-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 httpd 2.4.64-1 on CBL Mariner 2.02.4.64-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:httpd2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:httpd-core2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:httpd-devel2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:httpd-filesystem2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:httpd-manual2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:httpd-tools2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:mod_http21.15.7-10.module_el8.10.0+4044+ea5f78b1.4 · AlmaLinux:8Package registry (OSV)
almalinux:mod_ldap2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:mod_lua2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:mod_proxy_html1:2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:mod_session2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
almalinux:mod_ssl1:2.4.62-4.el9_6.4 · AlmaLinux:9Package registry (OSV)
alpine:apache22.4.64-r0 · Alpine:v3.19Package registry (OSV)
debian:apache22.4.65-1~deb12u1 · Debian:12Package registry (OSV)
opensuse:apache22.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-devel2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-event2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-manual2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-prefork2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-utils2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:apache2-worker2.4.58-150600.5.35.1 · openSUSE:Leap 15.6Package registry (OSV)
red hat:jbcs-httpd24-httpd0:2.4.62-8.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-debuginfo0:2.4.62-8.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-devel0:2.4.62-8.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-manual0:2.4.62-8.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-selinux0:2.4.62-8.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)

+18

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:42025-10-22

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+103 d
  3. TodayNov 10, 2026+488 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-63045448 days apartApache HTTP Server: mod_proxy_ftp PASV address handling
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-284 · Improper Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records