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CVE-2026-48690

FastNetMon Community Edition through 1.2.9 contains an integer overflow vulnerability in the packet capture buffer allocation. In src/packet_storage.hpp, the allocate_buffer() function computes memory_size_in_bytes as 'buffer_size_in_packets * (max_captured_packet_size + sizeof(fastnetmon_pcap_pkthdr_t)) + sizeof(fastnetmon_pcap_file_header_t)' using unsigned int (32-bit) arithmetic. With max_captured_packet_size=1500 and sizeof(fastnetmon_pcap_pkthdr_t)=16, each packet requires approximately 15
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e9eee9d234f5256a238523428262bd7290f1a46615b7f99383517b0e3d823b04
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/adp/0/problemTypes/0/descriptions/0

{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/adp/0/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/adp/0/problemTypes/0/descriptions/0
{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/adp/0/problemTypes/1/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/pavel-odintsov/fastnetmon"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/references/0
{"url":"https://github.com/pavel-odintsov/fastnetmon/blob/master/src/packet_storage.hpp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/references/1
{"url":"https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48690-packet-storage-integer-overflow"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce433321b92f80707bf458f3835440adafab41bf8347a2721ea25a84f9cf7093 · sha256:9d3e3c081d74a723… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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