What’s Vulnerable › Vulnerabilities

CVE-2021-27815

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-14 · updated 2026-06-17
• Weakness: CWE-476

Description

NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.

Affected products

• Fedoraproject Fedora: 32, 33, 34
• libexif project Exif: through 0.6.22

References

• https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa
• https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c
• https://github.com/libexif/exif/issues/4
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/
• https://security.gentoo.org/glsa/202210-28
• https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa
• https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c
• https://github.com/libexif/exif/issues/4
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/

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