How severe is CVE-2019-12247?

CVE-2019-12247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-12247 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12247?

CVE-2019-12247 affects Qemu. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12247?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-12247 published?

CVE-2019-12247 was published on 2019-05-22 and last updated on 2026-06-17.

CVE-2019-12247

CVE-2019-12247 is a high-severity vulnerability in Qemu with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Qemu
Published: 2019-05-22
Last modified: 2026-06-17

Description

QEMU 3.0.0 has an Integer Overflow because the qga/commands*.c files do not check the length of the argument list or the number of environment variables. NOTE: This has been disputed as not exploitable

Frequently asked questions

What is CVE-2019-12247?: QEMU 3.0.0 has an Integer Overflow because the qga/commands*.c files do not check the length of the argument list or the number of environment variables. NOTE: This has been disputed as not exploitable
How severe is CVE-2019-12247?: CVE-2019-12247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-12247 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12247?: CVE-2019-12247 affects Qemu. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12247?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-12247 published?: CVE-2019-12247 was published on 2019-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:qemu:qemu:3.0.0:*:*:*:*:*:*:*

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