CVE-2021-3407

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

50.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 98.8% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-02-23 22:04Z5 YR AGO

Last updated

2025-02-13 16:28Z1 YR AGO

Reserved

2021-02-09

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-415Double FreeVariant

Data version

5.1

Document digest

f43cfe6a1fb0f16a92c983072f3a51e217d14c2c436e54ba08b98a707e396bbf

• git.ghostscript.comhttp://git.ghostscript.com/?p=mupdf.git%3Bh=cee7cefc610d42fd383b3c80c12cbc675443176ax_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-d8e6f014e5https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCADE3VSPWCGTE5BV4KL273R5VK3GDKM/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-572bb0f886https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M44PNYCBL33OD7GC75XNE6CDS4VSGVWO/vendor-advisoryx_refsource_FEDORA
• lists.debian.org[debian-lts-announce] 20210311 [SECURITY] [DLA 2589-1] mupdf security updatehttps://lists.debian.org/debian-lts-announce/2021/03/msg00012.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-baeaa7bccbhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLC6MPH7YS6JPU427XOFRLF3KKZQUZJN/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202105-30https://security.gentoo.org/glsa/202105-30vendor-advisoryx_refsource_GENTOO
• bugs.ghostscript.comhttps://bugs.ghostscript.com/show_bug.cgi?id=703366