A vulnerability in the email message and content filtering for malformed Multipurpose Internet Mail Extensions (MIME) headers of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of the targeted device
Published Oct 28, 2016
7.5
HIGHCVSS 3.0
EPSS 1.63%
Description
A vulnerability in the email message and content filtering for malformed Multipurpose Internet Mail Extensions (MIME) headers of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of the targeted device. Emails that should have been quarantined could instead be processed. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA on both virtual and hardware appliances that are configured with message or content filters to scan incoming email attachments. More Information: CSCuy54740, CSCuy75174. Known Affected Releases: 9.7.1-066 9.5.0-575 WSA10.0.0-000. Known Fixed Releases: 10.0.0-125 9.1.1-038 9.7.2-047.
Affected products
- Vendor n/a Product Cisco AsyncOS through WSA10.0.0-000 Defaultn/a
- Version Cisco AsyncOS through WSA10.0.0-000StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco AsyncOS through WSA10.0.0-000 | n/a |
|
- 8.0.1-023
- 8.0_base
- 8.5.0-000
- 8.5.0-er1-198
- 8.5.6-052
- 8.5.6-073
- 8.5.6-074
- 8.5.6-106
- 8.5.6-113
- 8.5.7-042
- 8.6.0
- 8.6.0-011
- 8.9.0
- 8.9.1-000
- 8.9.2-032
- 9.0.0
- 9.0.0-212
- 9.0.0-461
- 9.0.5-000
- 9.1.0
- 9.1.0-011
- 9.1.0-032
- 9.1.0-101
- 9.1.1-000
- 9.4.0
- 9.4.4-000
- 9.5.0-000
- 9.5.0-201
- 9.6.0-000
- 9.6.0-042
- 9.6.0-051
- 9.7.0-125
- 9.7.1-066
- 9.9.6-026
- 9.9_base
- 5.6.0-623
- 6.0.0-000
- 7.1.0
- 7.1.1
- 7.1.2
- 7.1.3
- 7.1.4
- 7.5.0-000
- 7.5.0-825
- 7.5.1-000
- 7.5.2-000
- 7.5.2-hp2-303
- 7.7.0-000
- 7.7.0-608
- 7.7.1-000
- 7.7.5-835
- 8.0.0-000
- 8.0.5
- 8.0.6
- 8.0.6-078
- 8.0.6-119
- 8.0.7
- 8.0.7-142
- 8.0.8-mr-113
- 8.5.0-497
- 8.5.0.000
- 8.5.1-021
- 8.5.2-024
- 8.5.2-027
- 8.5.3-055
- 8.8.0-000
- 8.8.0-085
- 9.0.0-193
- 9.0_base
- 9.1.0-000
- 9.1.0-070
- 9.1_base
- 9.5.0-235
- 9.5.0-284
- 9.5.0-444
- 9.5_base
- hot_patch_1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.63% (0.01634) | 75.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.63% (0.01634) | 73.12th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.25% (0.00250) | 46.35th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00277) | 69.07th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00277) | 67.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00277) | 63.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (4)
- http://www.securityfocus.com/bid/93911 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1037118 vdb-entryx_refsource_SECTRACK
- http://www.securitytracker.com/id/1037119 vdb-entryx_refsource_SECTRACK
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161026-esawsa2 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/93911 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1037118 | vdb-entryx_refsource_SECTRACK | |
| http://www.securitytracker.com/id/1037119 | vdb-entryx_refsource_SECTRACK | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161026-esawsa2 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.