01 Record

CVE-2017-9524

The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 4.09% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 89.8% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2017-07-06 16:00Z9 YR AGO

Last updated

2024-08-05 17:11Z2 YR AGO

Reserved

2017-06-09

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-20Improper Input ValidationClass
CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

9235215b37d7f9faff48181e6aaf010d9409b2fc97970123b260cbe036974382

05 Affected products

VendorProductVersionsPlatforms

debiandebian_linuxNot specified—

qemuqemuNot specified—

redhatenterprise_linuxNot specified—

redhatopenstackNot specified—

06 References

access.redhat.comRHSA-2017:1681https://access.redhat.com/errata/RHSA-2017:1681vendor-advisoryx_refsource_REDHAT
www.openwall.com[oss-security] 20170612 CVE-2017-9524 Qemu: nbd: segmentation fault due to client non-negotiationhttp://www.openwall.com/lists/oss-security/2017/06/12/1mailing-listx_refsource_MLIST
access.redhat.comRHSA-2017:1682https://access.redhat.com/errata/RHSA-2017:1682vendor-advisoryx_refsource_REDHAT
www.securityfocus.com99011http://www.securityfocus.com/bid/99011vdb-entryx_refsource_BID
lists.gnu.org[qemu-devel] 20170526 [PATCH] nbd: Fully initialize client in case of failed negotiationhttps://lists.gnu.org/archive/html/qemu-devel/2017-05/msg06240.htmlmailing-listx_refsource_MLIST
access.redhat.comRHSA-2017:2408https://access.redhat.com/errata/RHSA-2017:2408vendor-advisoryx_refsource_REDHAT
www.debian.orgDSA-3925http://www.debian.org/security/2017/dsa-3925vendor-advisoryx_refsource_DEBIAN
lists.gnu.org[qemu-devel] 20170608 [PATCH] nbd: Fix regression on resiliency to port scanhttps://lists.gnu.org/archive/html/qemu-devel/2017-06/msg02321.htmlmailing-listx_refsource_MLIST

01 Record index

CVE-2017-9524

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2017-9524

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References