CVE-2020-8813
HighExploitedPublic exploitgraph_realtime.php in Cacti 1.2.8 allows remote attackers to execute arbitrary OS commands via shell metacharacters in a cookie, if a guest user has the graph real-time privilege.
Published Feb 22, 2020 · Updated Aug 5, 2026 · Also known as DEBIAN-CVE-2020-8813, UBUNTU-CVE-2020-8813
Key Facts
Patch immediately- CVE-2020-8813 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Cacti, Open-Audit (Opmantek), Debian Linux and 3 more products.
- It is exploited in the wild, listed in Industry KEV feed since Sep 11, 2021. Public exploit code is available.
- EPSS estimates a 74% probability of exploitation in the next 30 days.
- Fixed versions are available, including Cacti 1.2.10+ds1-1, Cacti 1.2.11-5.1, Cacti 1.2.11-bp151.4.6.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
74%
Higher than 99.4% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
graph_realtime.php in Cacti 1.2.8 allows remote attackers to execute arbitrary OS commands via shell metacharacters in a cookie, if a guest user has the graph real-time privilege.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Sep 11, 2021 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
43 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| CactiCacti | 1.2.8 | 1.2.8-r0 |
| Open-AuditOpmantek | 3.3.1 | n/a |
| Debian LinuxDebian | 10.0 | n/a |
| FedoraFedoraproject | 30, 31, 32 | n/a |
| Suse Package HubOpensuse | See advisory | n/a |
Patched Releases
Cacti
1.2.10+ds1-1, 1.2.11-5.1, 1.2.11-bp151.4.6.1, 1.2.18-1.2, 1.2.2+ds1-2+deb10u5, 1.2.8-r0
cacti-spine
1.2.11-2.1, 1.2.11-bp151.4.6.1
Timeline
Publicly disclosed
Feb 22, 2020
Added to Industry KEV feed
Sep 11, 2021
Last updated
Aug 5, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryopenSUSE-SU-2020:0558
- advisoryhttp://packetstormsecurity.com/files/156537/Cacti-1.2.8-Unauthenticated-Remote-Code-Execution.html
- advisoryhttp://packetstormsecurity.com/files/156538/Cacti-1.2.8-Authenticated-Remote-Code-Execution.html
- advisoryhttp://packetstormsecurity.com/files/156593/Cacti-1.2.8-Unauthenticated-Remote-Code-Execution.html
- advisoryhttp://packetstormsecurity.com/files/157477/Open-AudIT-Professional-3.3.1-Remote-Code-Execution.html
FAQ
Common Questions.
graph_realtime.php in Cacti 1.2.8 allows remote attackers to execute arbitrary OS commands via shell metacharacters in a cookie, if a guest user has the graph real-time privilege.
Affected: Cacti versions 1.2.8; Open-Audit (Opmantek) versions 3.3.1; Debian Linux versions 10.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Sep 11, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Cacti 1.2.10+ds1-1, Cacti 1.2.11-5.1, Cacti 1.2.11-bp151.4.6.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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