CVE-2017-7539

mediumpriority · track · 32EPSS 0.055 · 93 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.46% (93rd) EPSS

CVSS 5 · medium

Is it mine?

11 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Psecondary · FSTEC (BDU) RU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · secalert@redhat.com USexploitability 3.9 · impact 1.4

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-617US

affected products (11)

Products and version ranges known to be affected.

qemu qemu≤ 2.10.1enisa_euvdEU
Fabrice Bellard QEMUall versionsfstec_bduRU
qemu qemu< 2.10.1nvdUScpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
redhat openstack= 10nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 11nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 6.0nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 7.0nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 8nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 9nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat virtualization= 3.0nvdUScpe:2.3:a:redhat:virtualization:*:*:*:*:*:*:*:*
redhat virtualization= 4.0nvdUScpe:2.3:a:redhat:virtualization:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2018-07-26modified 2026-06-17

references (40)

External citations — patches, advisories, analysis.

scry

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