CVE-2014-7840: qemu Improper Input Validation
Vulnerability summary
CVE-2014-7840 is a high (CVSS 7.5) Improper Input Validation vulnerability in qemu. EPSS estimates a 4.12% chance of exploitation in the next 30 days, higher than 90.7% of scored vulnerabilities.
Not severe (CVSS 7.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 2Timeline
- 12-12-2014PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
4.12%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.12% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- enterprise_linux_desktop7.0
- enterprise_linux_eus7.3 | 7.4 | 7.5 | 7.6 | 7.7
- enterprise_linux_server7.0
- enterprise_linux_server_aus7.3 | 7.4 | 7.6 | 7.7
- enterprise_linux_workstation7.0
Debian1 product
- qemu< 2.1+dfsg-8
Qemu1 product
- qemu≤ 2.1.3
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.9
4 vendors · 9 products
