CVE-2006-4018

Status: ModifiedHigh (7.5)—💥 Exploit
Heap-based buffer overflow in the pefromupx function in libclamav/upx.c in Clam AntiVirus (ClamAV) 0.81 through 0.88.3 allows remote attackers to execute arbitrary code via a crafted UPX packed file containing sections with large rsize values.
CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 19%
Percentile among all scored CVEs: 97
Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
Published on Exploit-DB · Clam Anti-Virus ClamAV 0.88.x - UPX Compressed PE File Heap Buffer Overflow (8/7/2006)
Affected technologies (1)

Clamav — Clamav
CWEs

CWE-119
References

Raw JSON (NVD)

Show
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}