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  <id>https://vulnerability.circl.lu/sightings/feed</id>
  <title>Most recent sightings.</title>
  <updated>2026-05-04T13:44:04.434211+00:00</updated>
  <author>
    <name>Vulnerability-Lookup</name>
    <email>info@circl.lu</email>
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  <link href="https://vulnerability.circl.lu" rel="alternate"/>
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  <subtitle>Contains only the most 10 recent sightings.</subtitle>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/2349951f-4b3d-4b88-bd6a-d83446868ea4/export</id>
    <title>2349951f-4b3d-4b88-bd6a-d83446868ea4</title>
    <updated>2026-05-04T13:44:04.867190+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>http://vulnerability.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "2349951f-4b3d-4b88-bd6a-d83446868ea4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21847", "type": "seen", "source": "https://t.me/cibsecurity/27500", "content": "\u203c CVE-2021-21847 \u203c\n\nMultiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input in \u00e2\u20ac\u0153stts\u00e2\u20ac\ufffd decoder can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-08-18T16:16:46.000000Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/2349951f-4b3d-4b88-bd6a-d83446868ea4/export"/>
    <published>2021-08-18T16:16:46+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/877a4df4-e587-4d0f-9591-8c3d1b253719/export</id>
    <title>877a4df4-e587-4d0f-9591-8c3d1b253719</title>
    <updated>2026-05-04T13:44:04.864715+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>http://vulnerability.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "877a4df4-e587-4d0f-9591-8c3d1b253719", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21847", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/4219", "content": "#exploit\nPoCs for exploiting CVE-2021-21847, \nCVE-2021-21853, CVE-2021-21845, \nCVE-2021-21846, CVE-2021-21844,\nCVE-2021-21839:\nhttps://github.com/AlAIAL90/CVE-2021-21847\nhttps://github.com/AlAIAL90/CVE-2021-21853\nhttps://github.com/AlAIAL90/CVE-2021-21845\nhttps://github.com/AlAIAL90/CVE-2021-21846\nhttps://github.com/AlAIAL90/CVE-2021-21844\nhttps://github.com/AlAIAL90/CVE-2021-21839\n// Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project", "creation_timestamp": "2024-03-29T14:38:26.000000Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/877a4df4-e587-4d0f-9591-8c3d1b253719/export"/>
    <published>2024-03-29T14:38:26+00:00</published>
  </entry>
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