Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2017-9049

CVE-2017-9049HIGH

n/a n/a — libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0463   91.6     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  May 18  Reserved by mitre
  May 18  Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2017-9049. Public exploit reference added.

CWE-125 · CNA: mitre · CVSS v3.1 · 7 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 18, 2017	Reserved	Reserved by mitre
May 18, 2017	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2017-9049. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-125

References (7)

http://www.debian.org/security/2017/dsa-3952
http://www.openwall.com/lists/oss-security/2017/05/15/1 [Exploit, Mailing List, Patch, Third Party Advisory]
http://www.securityfocus.com/bid/98601 [Third Party Advisory, VDB Entry]
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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

Authoritative record: CVE-2017-9049 at cve.org

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2017-9049 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.