Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.5.
{
"sources": [
{
"modified": "2026-06-17T03:55:40.620Z",
"id": "CVE-2021-34334",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34334",
"database_specific": {
"status": "Modified"
},
"published": "2021-08-09T18:15:07.513Z",
"imported": "2026-08-12T14:19:46.441Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-34334"
},
{
"modified": "2024-08-04T00:05:52Z",
"id": "EUVD-2021-20995",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-20995",
"imported": "2026-08-12T14:19:49.409Z",
"published": "2021-08-09T00:00:00Z",
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2021-20995"
}
],
"license": "CC-BY-4.0"
}