CVE-2018-17963

CRITICALNVD 9.89.8—Trending — 4 sources updated this week

9.8

qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 81.1%
KEV: Not listed

Published

October 9, 2018

Last Modified

November 21, 2024

References (18)

cve@mitrehttp://www.openwall.com/lists/oss-security/2018/10/08/1
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2166
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2425
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2553
cve@mitrehttps://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
cve@mitrehttps://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html
cve@mitrehttps://lists.gnu.org/archive/html/qemu-devel/2018-11/msg06054.html
cve@mitrehttps://usn.ubuntu.com/3826-1/
cve@mitrehttps://www.debian.org/security/2018/dsa-4338
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2018/10/08/1
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2166
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2425
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2553
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
af854a3a-2127-422b-91ae-364da2661108https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html

Vendor Advisories for CVE-2018-17963(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2019:2553
Red Hat Product SecurityHigh
Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update

Patch Availability(3)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	qemu-utils (1:2.5+dfsg-5ubuntu10.33) @ xenial	2026-05-28	ubuntu
redhat	qemu-kvm-rhev-10:2.12.0-33.el7	2019-08-22	redhat
redhat	qemu-kvm-ma-10:2.12.0-33.el7	2019-08-06	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-190Integer Overflow or Wraparound

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 17× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-01 13:49 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 02:20 UTCEG score recompute
2026-05-28 02:20 UTCVendor advisory
2026-05-28 02:20 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-17963?

CVE-2018-17963 is a critical vulnerability published on October 9, 2018. qemudeliverpacketiov in net/net.c in Qemu accepts packet sizes greater than INTMAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.

When was CVE-2018-17963 disclosed?

CVE-2018-17963 was first published in the National Vulnerability Database on October 9, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-17963 actively exploited?

CVE-2018-17963 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-17963?

CVE-2018-17963 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-17963?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-17963, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-17963

Published

Last Modified

References (18)

Vendor Advisories for CVE-2018-17963(1)

Patch Availability(3)

Weakness Classification(1)

Additional Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-17963?

Same vendor

Same CWE

CVE-2018-17963

📅 Published

🔄 Last Modified

🔗 References (18)

📣 Vendor Advisories for CVE-2018-17963(1)

Patch Availability(3)

Weakness Classification(1)

Additional Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-17963?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (18)

Vendor Advisories for CVE-2018-17963(1)

Frequently asked(5)

Related CVEs(same vendor + same CWE)