E-Mail Security Virtual Appliance learn-msg.cgi Command Injection
Published Aug 8, 2025
9.3
CRITICALCVSS 4.0
EPSS 4.19%
Description
The E-Mail Security Virtual Appliance (ESVA) (tested on version ESVA_2057) contains an unauthenticated command injection vulnerability in the learn-msg.cgi script. The CGI handler fails to sanitize user-supplied input passed via the id parameter, allowing attackers to inject arbitrary shell commands. Exploitation requires no authentication and results in full command execution on the underlying system.
Affected products
-
- Version ESVA_2057StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ESVA-Project | E-Mail Security Virtual Appliance | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Aug 8, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.19% (0.04187) | 90.62th | v5 (v2026.06.15) |
| Sep 20, 2026 | 2.93% (0.02929) | 86.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.00% (0.03005) | 85.60th | v5 (v2026.06.15) |
| Jun 4, 2026 | 68.08% (0.68079) | 98.61th | v4 (v2025.03.14) |
| Jan 5, 2026 | 52.95% (0.52946) | 97.84th | v4 (v2025.03.14) |
| Jan 4, 2026 | 59.13% (0.59126) | 98.15th | v4 (v2025.03.14) |
| Dec 8, 2025 | 68.96% (0.68961) | 98.56th | v4 (v2025.03.14) |
| Oct 8, 2025 | 71.60% (0.71596) | 98.66th | v4 (v2025.03.14) |
| Aug 9, 2025 | 0.53% (0.00529) | 66.20th | v4 (v2025.03.14) |
References (5)
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/esva_exec.rb exploit
- https://sourceforge.net/projects/esva-project/ product
- https://www.exploit-db.com/exploits/20551 exploit
- https://www.exploit-db.com/exploits/20712 exploit
- https://www.vulncheck.com/advisories/email-security-virtual-appliance-command-injection third-party-advisory
Change history (0)
No recorded changes yet.