Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Evidence dossier
CVE-2025-20393
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
75.9–90.9Priority evidence range
gen-56ccdaf9Normalized restatement
A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to execute arbitrary system commands on an affected device with root privileges. This vulnerability is due to insufficient validation of HTTP requests by the Spam Quarantine feature. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root privileges.
- State
- PUBLISHED
- Published
- Dec 17, 2025
- Updated
- Feb 26, 2026
- Evidence coverage
- 85%
2026-07-18 · v2026.06.15 · percentile 98.0%
Distinct CVSS assessments remain side by side; none are averaged.
Source comparison
Who said what
ciscooriginal assertion
container
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
Jul 19, 2026Original evidence ↗
CISA KEVoriginal assertion
observed_exploitation
Cisco Multiple Products Improper Input Validation Vulnerability
Jul 19, 2026Original evidence ↗
FIRST EPSSoriginal assertion
model_probability
Probability 0.295100000000; percentile 0.979760000000
Jul 19, 2026Original evidence ↗
Applicability
Cited product scope
CiscoCisco Secure Email
[{"status": "affected", "version": "14.0.0-698"}, {"status": "affected", "version": "13.5.1-277"}, {"status": "affected", "version": "13.0.0-392"}, {"status": "affected", "version": "14.2.0-620"}, {"status": "affected", "version": "13.0.5-007"}, {"status": "affected", "version": "13.5.4-038"}, {"status": "affected", "version": "14.2.1-020"}, {"status": "affected", "version": "14.3.0-032"}, {"status": "affected", "version": "15.0.0-104"}, {"status": "affected", "version": "15.0.1-030"}, {"status": "affected", "version": "15.5.0-048"}, {"status": "affected", "version": "15.5.1-055"}, {"status": "affected", "version": "15.5.2-018"}, {"status": "affected", "version": "16.0.0-050"}, {"status": "affected", "version": "15.0.3-002"}, {"status": "affected", "version": "16.0.0-054"}, {"status": "affected", "version": "15.5.3-022"}, {"status": "affected", "version": "16.0.1-017"}]unknownCiscoCisco Secure Email and Web Manager
[{"status": "affected", "version": "13.6.2-023"}, {"status": "affected", "version": "13.6.2-078"}, {"status": "affected", "version": "13.0.0-249"}, {"status": "affected", "version": "13.0.0-277"}, {"status": "affected", "version": "13.8.1-052"}, {"status": "affected", "version": "13.8.1-068"}, {"status": "affected", "version": "13.8.1-074"}, {"status": "affected", "version": "14.0.0-404"}, {"status": "affected", "version": "12.8.1-002"}, {"status": "affected", "version": "14.1.0-227"}, {"status": "affected", "version": "13.6.1-201"}, {"status": "affected", "version": "14.2.0-203"}, {"status": "affected", "version": "14.2.0-212"}, {"status": "affected", "version": "12.8.1-021"}, {"status": "affected", "version": "13.8.1-108"}, {"status": "affected", "version": "14.2.0-224"}, {"status": "affected", "version": "14.3.0-120"}, {"status": "affected", "version": "15.0.0-334"}, {"status": "affected", "version": "15.5.1-024"}, {"status": "affected", "version": "15.5.1-029"}, {"status": "affected", "version": "15.5.2-005"}, {"status": "affected", "version": "16.0.0-195"}, {"status": "affected", "version": "15.5.3-017"}, {"status": "affected", "version": "16.0.1-010"}, {"status": "affected", "version": "15.0.1-035"}, {"status": "affected", "version": "16.0.2-088"}]unknownUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m100v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m300v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m600v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m170:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m190:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m195:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m380:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m390:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m390x:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m395:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m680:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m690:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m690x:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_and_web_manager_m695:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:*constrainedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; end excluding 15.0.5-016supportedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 15.5; end excluding 15.5.4-012supportedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 16.0; end excluding 16.0.4-016supportedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; end excluding 15.0.2-007supportedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 15.5; end excluding 15.5.4-007supportedUnknown vendorUnknown product
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 16.0; end excluding 16.0.4-010supportedAssessments
CVSS by origin
psirt@cisco.comCVSS 3.1 · role Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HciscoCVSS 3.1 · role unknown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HLimitations and unknowns
- KEV membership is authoritative for the catalog, not proof of exposure in any environment.
- EPSS is a dated model probability and not an individual-environment prediction.
- Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
- NVD-carried upstream facts remain derivative and are not independent corroboration.
- Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
- NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
- Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
- Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.