CVE-2021-20307

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 78.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-04-05 21:34Z5 YR AGO

Last updated

2024-08-03 17:37Z2 YR AGO

Reserved

2020-12-17

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-134Use of Externally-Controlled Format StringBase

Data version

5.1

Document digest

6f80f2e2a643634a2387d7e43d057cfc1c3fbbd64b0ed31b067f88d4b25bdaf6

• sourceforge.nethttps://sourceforge.net/projects/panotools/files/libpano13/libpano13-2.9.20/x_refsource_MISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1946284x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20210412 [SECURITY] [DLA 2624-1] libpano13 security updatehttps://lists.debian.org/debian-lts-announce/2021/04/msg00010.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-67cbea4608https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE6YZSXNVD6WZ3AG3ENL2DIHQFF24LYX/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-596fc11138https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VYDYBKHT2MNMQCUMAVJNZW4VH6MD5BOF/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-af806dd42dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FVJRXUOBN56ZWP6QQ3NTA6DIFZMDZAEQ/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202107-47https://security.gentoo.org/glsa/202107-47vendor-advisoryx_refsource_GENTOO