CVE-2017-9789

EPSS 6.09% · P91 Updated Feb 21, 2026

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I. Basic Information for CVE-2017-9789

Vulnerability Information

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Vulnerability Title

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Description

When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.

Source: NVD (National Vulnerability Database)

CVSS Information

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Type

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Title

Apache httpd 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Apache httpd是美国阿帕奇（Apache）软件基金会的一款专为现代操作系统开发和维护的开源HTTP服务器。 Apache httpd 2.4.26版本中的HTTP/2处理代码存在释放后重用漏洞。攻击者可利用该漏洞造成拒绝服务或获取敏感信息。

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Apache Software Foundation	Apache HTTP Server	2.4.26	-

II. Public POCs for CVE-2017-9789

#	POC Description	Source Link	Shenlong Link

AI-Generated POCPremium

No public POC found.

III. Intelligence Information for CVE-2017-9789

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https://security.netapp.com/advisory/ntap-20170911-0002/x_refsource_CONFIRM
https://support.apple.com/HT208221x_refsource_CONFIRM
Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Projectx_refsource_CONFIRM
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_usx_refsource_CONFIRM
http://www.securityfocus.com/bid/99568vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1038907vdb-entryx_refsource_SECTRACK
https://security.gentoo.org/glsa/201710-32vendor-advisoryx_refsource_GENTOO
https://lists.apache.org/thread.html/9d0098775bd83cf7c33ac5a077ef412c14ce939198921e639c734e20%40%3Cannounce.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html-Apache Mail Archivesmailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://nvd.nist.gov/vuln/detail/CVE-2017-9789

Same Patch Batch · Apache Software Foundation · 2017-07-13 · 4 CVEs total

CVE-2017-7672		Apache Struts 2 安全漏洞
CVE-2017-9787		Apache Struts 2 安全漏洞
CVE-2017-9788		Apache httpd 安全漏洞

IV. Related Vulnerabilities

Same product: Apache HTTP Server

Same vendor: Apache Software Foundation

V. Comments for CVE-2017-9789

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CVE-2017-9789

I. Basic Information for CVE-2017-9789

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2017-9789

III. Intelligence Information for CVE-2017-9789

Same Patch Batch · Apache Software Foundation · 2017-07-13 · 4 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2017-9789

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