CVE-2020-8508: norman malware_cleaner Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 03-02-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-8508 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in norman malware_cleaner. EPSS estimates a 1.72% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.72%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 03-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
nsak64.sys in Norman Malware Cleaner 2.08.08 allows users to call arbitrary kernel functions because the passing of function pointers between user and kernel mode is mishandled.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.72%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.72% on 19-09-2026
19-09-202619-10-2026
EPSS score1.72%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (downwithup.github.io)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Norman1 product
- malware_cleaner2.08.08
1 vendor · 1 product