{"api_version":"1","generated_at":"2026-05-13T17:10:34+00:00","cve":"CVE-2021-29470","urls":{"html":"https://cve.report/CVE-2021-29470","api":"https://cve.report/api/cve/CVE-2021-29470.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-29470","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29470"},"summary":{"title":"CVE-2021-29470","description":"Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert. 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