{"vulnerability": "CVE-2021-41991", "sightings": [{"uuid": "d753902d-8b74-4478-ab84-adf6a5e0404b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-41991", "type": "seen", "source": "https://t.me/cibsecurity/30704", "content": "\u203c CVE-2021-41991 \u203c\n\nThe in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-10-18T18:32:07.000000Z"}, {"uuid": "6366786d-70d3-4a63-a117-18d186db1733", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-41991", "type": "seen", "source": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-259-03", "content": "", "creation_timestamp": "2025-09-16T10:00:00.000000Z"}]}