CVE-2022-33871: fortinet fortiweb Stack-based Buffer Overflow
Vulnerability summary
CVE-2022-33871 is a high (CVSS 7.2) Stack-based Buffer Overflow vulnerability in fortinet fortiweb. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.5% of scored vulnerabilities.
Timeline
- 16-02-2023PublishedVulnerability first disclosed.
- 23-10-2024Last modifiedVulnerability information updated.
Description
A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and earlier, 6.4 all versions, version 6.3.19 and earlier may allow a privileged attacker to execute arbitrary code or commands via specifically crafted CLI `execute backup-local rename` and `execute backup-local show` operations.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA6.3MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:CDiffers
EPSS trend
Probability
0.94%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.94% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Fortinet1 product
- fortiweb≥ 7.0.0, ≤ 7.0.1 | ≥ 6.4.0, ≤ 6.4.2 | ≥ 6.3.6, ≤ 6.3.19 | ≥ 6.3.6, < 6.3.20 | 6.4.0 | 6.4.1 | 6.4.2 | 7.0.0 | 7.0.1
1 vendor · 1 product