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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: network attack vector, M complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 75.44%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 75.4% exploitation probability (EPSS)

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AnalysisAI

Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 75.4%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-362. Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive credential information or execute arbitrary code, via a crafted request that triggers improper scoreboard handling within the status_handler function in modules/generators/mod_status.c and the lua_ap_scoreboard_worker function in modules/lua/lua_request.c. Affected products include: Apache Http Server, Debian Debian Linux, Redhat Jboss Enterprise Application Platform, Oracle Enterprise Manager Ops Center, Oracle Http Server. Version information: before 2.4.10.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive credential information or execute arbitrary code, via a crafted request that triggers improper scoreboard handling within the status_handler function in modules/generators/mod_status.c and the lua_ap_scoreboard_worker function in modules/lua/lua_request.c.

Threat Intelligence Overview

Threat Score
5.1/10
Composite threat intelligence
EPSS Score
75.4%
Top 1% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 75.4%
Patch available Yes
Active threat Yes
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

129
Low Medium High Critical
KEV: 0
EPSS: +75
CVSS: +34
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:11.1.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.1.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:10.1.3.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:11.1.1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_global_desktop:4.63:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_global_desktop:4.71:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_global_desktop:5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_global_desktop:5.1:*:*:*:*:*:*:*
CVE-2021-40438 CRITICAL POC
9.0 Sep 16

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user.4.4

CVE-2023-44487 HIGH POC
7.5 Oct 10

Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour

CVE-2017-9798 HIGH POC
7.5 Sep 18

Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user

CVE-2013-2566 MEDIUM POC
5.9 Mar 15

The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for

CVE-2016-8740 HIGH POC
7.5 Dec 05

The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2

CVE-2026-21962 CRITICAL POC
10.0 Jan 20

Oracle HTTP Server and WebLogic Server Proxy Plug-in have a CVSS 10.0 access control vulnerability allowing unauthentica

CVE-2020-1967 HIGH POC
7.5 Apr 21

Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due

CVE-2013-5704 MEDIUM POC
5.0 Apr 15

The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directiv

CVE-2013-2249 HIGH POC
7.5 Jul 23

mod_session_dbd.c in the mod_session_dbd module in the Apache HTTP Server before 2.4.5 proceeds with save operations for

CVE-2016-5387 HIGH
8.1 Jul 19

The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from t

CVE-2017-7668 HIGH
7.5 Jun 20

The HTTP strict parsing changes added in Apache httpd 2.2.32 and 2.4.24 introduced a bug in token list parsing, which al

CVE-2017-3169 CRITICAL POC
9.8 Jun 20

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party mod

References

Advisories & patches
PATCH http://httpd.apache.org/security/vulnerabilities_24.html PATCH http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/generators/mod_status.c?r1=1450998&r2=1610491&diff_format=h PATCH http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/lua/lua_request.c?r1=1588989&r2=1610491&diff_format=h ADVISORY http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGES ADVISORY http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/generators/mod_status.c ADVISORY http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/lua/lua_request.c REF http://advisories.mageia.org/MGASA-2014-0304.html REF http://advisories.mageia.org/MGASA-2014-0305.html REF http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html REF http://marc.info/?l=bugtraq&m=143403519711434&w=2 REF http://marc.info/?l=bugtraq&m=143748090628601&w=2 REF http://marc.info/?l=bugtraq&m=144050155601375&w=2 REF http://marc.info/?l=bugtraq&m=144493176821532&w=2 REF http://rhn.redhat.com/errata/RHSA-2014-1019.html REF http://rhn.redhat.com/errata/RHSA-2014-1020.html REF http://rhn.redhat.com/errata/RHSA-2014-1021.html REF http://secunia.com/advisories/60536 REF http://security.gentoo.org/glsa/glsa-201408-12.xml REF http://www.debian.org/security/2014/dsa-2989 REF http://www.mandriva.com/security/advisories?name=MDVSA-2014:142 REF http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html REF http://www.osvdb.org/109216 REF http://www.securityfocus.com/bid/68678 REF http://zerodayinitiative.com/advisories/ZDI-14-236/ REF https://bugzilla.redhat.com/show_bug.cgi?id=1120603 REF https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04832246 REF https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r9821b0a32a1d0a1b4947abb6f3630053fcbb2ec905d9a32c2bd4d4ee%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E REF https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E REF https://puppet.com/security/cve/cve-2014-0226 REF https://security.gentoo.org/glsa/201504-03 REF https://support.apple.com/HT204659 REF https://www.povonsec.com/apache-2-4-7-exploit/

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