Multiple heap-based buffer overflows in the cirrus_invalidate_region function in the Cirrus VGA extension in QEMU 0.8.2, as used in Xen and possibly other products, might allow local users to execute arbitrary code via unspecified vectors related to "attempting to mark non-existent regions as dirty," aka the "bitblt" heap overflow.
Conclusion & alert: CVE-2007-1320 is rated Low Risk (34.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-26 | 0.16% | 0.05% | -0.11% |
| 2 | 2025-03-17 | 0.06% | 0.16% | +0.09% |
| 3 | 2024-06-27 | — | 0.06% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2007-1320 not yet assigned priority: Debian including 1 source packages (qemu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2007-1320 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2007-1320 |
ubuntu
|
medium | CVE-2007-1320 medium priority: Ubuntu including 4 source packages (kvm, qemu, qemu-kvm, xen-3.1), 31 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): DNE 11, released 7, not-affected 6, ignored 5, needed 1, needs-triage 1. | https://ubuntu.com/security/CVE-2007-1320 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| qemu | qemu | 0.8.2 | cpe:2.3:a:qemu:qemu:0.8.2:*:*:*:*:*:*:* |
| fedoraproject | fedora | 8 | cpe:2.3:o:fedoraproject:fedora:8:*:*:*:*:*:*:* |
| fedoraproject | fedora | 9 | cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:* |
| fedoraproject | fedora_core | 6 | cpe:2.3:o:fedoraproject:fedora_core:6:*:*:*:*:*:*:* |
| opensuse | opensuse | 11.0 | cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:* |
| opensuse | opensuse | 11.1 | cpe:2.3:o:opensuse:opensuse:11.1:*:*:*:*:*:*:* |
| debian | debian_linux | 3.1 | cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* |
| debian | debian_linux | 4.0 | cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* |