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CVE-2015-7942

The xmlParseConditionalSections function in parser.c in libxml2 does not properly skip intermediary entities when it stops parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted XML data, a different vulnerability than CVE-2015-7941.

Severity
Medium 6.8
Published
18 Nov 2015
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
4.5% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
libxml2Servers and applications · cpe:a:xmlsoft:libxml2
  • Version 2.9.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-7942
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-7942