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…
- 7.5HighCVSS base score
- 4.1%Exploitation in 30 daysEPSS · top 9.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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 crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
Timeline
ID reserved
By mitre
- 27 days later
· 27 days later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.1% · top 9.2% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
8
- RHSA-2017:1681 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [oss-security] 20170612 CVE-2017-9524 Qemu: nbd: segmentation fault due to client non-negotiation (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2017:1682 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 99011 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [qemu-devel] 20170526 [PATCH] nbd: Fully initialize client in case of failed negotiation (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2017:2408 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-3925 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [qemu-devel] 20170608 [PATCH] nbd: Fix regression on resiliency to port scan (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-18455 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-9524)Record last updated .