CVE-2017-9049

Name: CVE-2017-9049
Creator: NVD / NIST
Published: 2017-05-18T06:29:00.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.63%

Last modified Jun 17, 2026

CVE-2017-9049 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. EPSS estimates a 4.63% chance of exploitation in the next 30 days.

Description

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

4.63%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Xmlsoft	Libxml2	2.9.4

References

http://www.debian.org/security/2017/dsa-3952
http://www.openwall.com/lists/oss-security/2017/05/15/1Exploit, Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/98601Third Party Advisory, VDB Entry
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://security.gentoo.org/glsa/201711-01
http://www.debian.org/security/2017/dsa-3952
http://www.openwall.com/lists/oss-security/2017/05/15/1Exploit, Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/98601Third Party Advisory, VDB Entry
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://security.gentoo.org/glsa/201711-01

Timeline

Published: May 18, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-9049?

How severe is CVE-2017-9049?

CVE-2017-9049 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.63% probability of exploitation in the next 30 days.

How do I fix CVE-2017-9049?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-9049?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST