Servers and applications
CVE-2017-18258
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
- Severity
- Medium 6.5
- Published
- 8 Apr 2018
- Last changed
- 14 Oct 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 2.9.6
- Exploit chance
- 2.7% in the next 30 daysHigher than 86% of CVEs. EPSS by FIRST, 10 Nov 2026
- Attack
- Over the network · No login needed · Needs someone to click or open something
- Attacker can
- Take it down
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
libxml2Servers and applications · cpe:a:xmlsoft:libxml2 |
|