CVE-2021-27815

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

1.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 69.3% 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

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2021-04-14 00:00Z5 YR AGO

Last updated

2024-08-03 21:33Z2 YR AGO

Reserved

2021-03-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

3c2e8c8d1ea401d3e904c772ba42e41d3884b2d09a8da7685ef906f1fb2b31ba

• github.comhttps://github.com/libexif/exif/issues/4
• github.comhttps://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c
• github.comhttps://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa
• lists.fedoraproject.orgFEDORA-2021-04f7b000fahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-477809f45fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-b2bd2b1d13https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/vendor-advisory
• security.gentoo.orgGLSA-202210-28https://security.gentoo.org/glsa/202210-28vendor-advisory