CVE-2015-8743

Name: CVE-2015-8743
Creator: NVD / NIST
Published: 2016-12-29T22:59:00.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2015-8743 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.45%

35.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 2.5.1
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0

References

http://www.debian.org/security/2016/dsa-3469Third Party Advisory
http://www.debian.org/security/2016/dsa-3470Third Party Advisory
http://www.debian.org/security/2016/dsa-3471Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/04/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/04/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/79820Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034574Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1264929Issue Tracking
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201602-01Third Party Advisory
http://www.debian.org/security/2016/dsa-3469Third Party Advisory
http://www.debian.org/security/2016/dsa-3470Third Party Advisory
http://www.debian.org/security/2016/dsa-3471Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/04/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/04/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/79820Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034574Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1264929Issue Tracking
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201602-01Third Party Advisory

Timeline

Published: Dec 29, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-8743?

How severe is CVE-2015-8743?

CVE-2015-8743 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2015-8743?

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-2015-8743?

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

Scan your code now

Source: NVD / NIST