CVE-2020-29016: fortinet fortinet fortiweb Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 14-01-2021Last modified 25-10-2024
Vulnerability summary
CVE-2020-29016 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in fortinet fortinet fortiweb. EPSS estimates a 3.44% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
3.44%
0%100%
Low · +0.14 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 14-01-2021PublishedVulnerability first disclosed.
- 25-10-2024Last modifiedVulnerability information updated.
Description
A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.5 and version before 6.2.4 may allow an unauthenticated, remote attacker to overwrite the content of the stack and potentially execute arbitrary code by sending a crafted request with a large certname.
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
3.44%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
+0.14 pp
From 3.30% on 21-09-2026
21-09-202621-10-2026
EPSS score3.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Fortinet2 products
- fortinet fortiwebFortiWeb 6.3.0 through 6.3.5 and version before 6.2.4
- fortiweb< 6.2.4 | ≥ 6.3.0, ≤ 6.3.5
1 vendor · 2 products