CVE-2020-25741

Name: CVE-2020-25741
Creator: NVD / NIST
Published: 2020-10-02T09:15:13.807+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.2/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2020-25741 is a low-severity vulnerability rated 3.2/10 on the CVSS scale. fdctrl_write_data in hw/block/fdc.c in QEMU 5.0.0 has a NULL pointer dereference via a NULL block pointer for the current drive.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

fdctrl_write_data in hw/block/fdc.c in QEMU 5.0.0 has a NULL pointer dereference via a NULL block pointer for the current drive.

Metrics

CVSS 3.1

3.2/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Qemu	Qemu	5.0.0

References

http://www.openwall.com/lists/oss-security/2020/09/29/1Mailing List, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05295.htmlMailing List, Patch, Third Party Advisory
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Ffdc_nullptr1Third Party Advisory
https://security.netapp.com/advisory/ntap-20201009-0005/Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/29/1Mailing List, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05295.htmlMailing List, Patch, Third Party Advisory
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Ffdc_nullptr1Third Party Advisory
https://security.netapp.com/advisory/ntap-20201009-0005/Third Party Advisory

Timeline

Published: Oct 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25741?

fdctrl_write_data in hw/block/fdc.c in QEMU 5.0.0 has a NULL pointer dereference via a NULL block pointer for the current drive.

How severe is CVE-2020-25741?

CVE-2020-25741 has a CVSS score of 3.2/10 (LOW severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25741?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25741?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST