AS
Product
Asyncos
by Cisco · last CVE Oct 14, 2026
On CISA KEVExploited in the wild
56
CVEs
3
On KEV
10.0
Max CVSS
1
New 30D
Severity mix
Critical 3High 20Medium 29Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2025-20393
In wildKEV
10.0
32%
Dec 17
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
Affected: before 15.0.5-016; 15.5 before 15.5.4-012; 16.0 before 16.0.4-016; before 15.0.2-007; 15.5 before 15.5.4-007; 16.0 before 16.0.4-010
CVE-2026-76519
In wildKEV
9.8
2%
Oct 14
Cisco Secure Email Gateway Arbitrary File Write Vulnerability
Affected: 15.0 before 15.5.5-014; 16.0 before 16.5.0-780
CVE-2026-76461
In wildKEV
9.8
30%
Sep 14
Cisco Secure Email Gateway SQL Injection Vulnerability
Affected: before 15.5.5-014; 16.0 before 16.0.4-302; 16.5 before 16.5.0-780
CVE-2022-20871
8.8
2%
Nov 15
A vulnerability in the web management interface of Cisco AsyncOS for Cisco Secure Web Appliance, formerly Cisco Web Security Appliance (WSA), could allow an…
Affected: 12.5.1-011; 12.5.2-007; 12.5.2-011; 12.5.3-002; 12.5.4-005; 12.5.4-011; +5 more
CVE-2022-20868
8.8
1%
Nov 3
A vulnerability in the web-based management interface of Cisco Email Security Appliance, Cisco Secure Email and Web Manager and Cisco Secure Web Appliance could allow an…
Affected: 13.0 before 14.2.1; 12.0 before 14.2.0; 11.8 before 12.5.5; 14.0 before 14.0.4; 14.5
CVE-2021-1359
8.8
2%
Jul 8
A vulnerability in the configuration management of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to perform command injection…
Affected: 11.8.0 before 12.0.3-005; 12.5.0 before 12.5.2
CVE-2019-15956
8.8
1%
Nov 26
A vulnerability in the web management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to perform an…
Affected: 10.1 before 10.1.5-004; 10.5 before 11.5.3-016; 11.7 before 11.7.1-006
CVE-2019-1947
8.6
2%
Sep 23
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause…
Affected: 12.1.0-085
CVE-2019-1886
8.6
1%
Jul 4
A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition
Affected: 10.5 before 10.5.5-005; 11.5 before 11.5.2-020
CVE-2018-15460
8.6
3%
Jan 10
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to cause…
Affected: before 11.0.2-044_md; 11.1.0 before 11.1.2-023_md
CVE-2024-20383
8.4
0%
May 15
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager could allow an authenticated, remote attacker to conduct an…
Affected: before 15.5.1-024
CVE-2024-20435
7.8
0%
Jul 17
A vulnerability in the CLI of Cisco AsyncOS for Secure Web Appliance could allow an authenticated, local attacker to execute arbitrary commands and elevate privileges to root
Affected: 11.7.0-406; 11.7.0-418; 11.7.1-006; 11.7.1-020; 11.7.1-049; 11.7.2-011; +21 more
CVE-2020-3367
7.8
1%
Nov 18
A vulnerability in the log subscription subsystem of Cisco AsyncOS for the Cisco Secure Web Appliance (formerly Web Security Appliance) could allow an authenticated, local…
Affected: before 11.7.2-011; 11.8.0 before 11.8.2-009; 12.0.0 before 12.0.2; 12.5.0 before 12.5.1-011
CVE-2018-0095
7.8
0%
Jan 18
A vulnerability in the administrative shell of Cisco AsyncOS on Cisco Email Security Appliance (ESA) and Content Security Management Appliance (SMA) could allow an authenticated,…
Affected: 9.1.1-005; 9.7.2-065
CVE-2022-20653
7.5
2%
Feb 17
A vulnerability in the DNS-based Authentication of Named Entities (DANE) email verification component of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could…
Affected: before 13.0.3; 13.5.0 before 13.5.4.102; 14.0 before 14.0.2.020
CVE-2021-34741
7.5
1%
Nov 4
A vulnerability in the email scanning algorithm of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to perform a…
Affected: before 13.0.4; 13.5.3-010; 13.7.0-093
CVE-2021-34698
7.5
1%
Oct 6
A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a…
Affected: 12.0 before 12.0.3-005; 12.5 before 12.5.2-007; 14.0 before 14.0.1-014
CVE-2016-1461
7.5
2%
Aug 1
Cisco AsyncOS on Email Security Appliance (ESA) devices through 9.7.0-125 allows remote attackers to bypass malware detection via a crafted attachment in an e-mail message, aka…
Affected: through 9.7.0-125
CVE-2016-1438
7.5
1%
Jun 23
Cisco AsyncOS 9.7.0-125 on Email Security Appliance (ESA) devices allows remote attackers to bypass intended spam filtering via crafted executable content in a ZIP archive, aka…
Affected: 9.7.0-125
CVE-2021-1566
7.4
1%
Jun 16
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco Web Security Appliance…
Affected: before 12.5.3-035; 13.0 before 13.0.0-030; 13.5 before 13.5.3-010; before 11.8.3-021; 12.0.0 before 12.0.3-005; 12.5.0 before 12.5.1-043
CVE-2025-20184
7.2
1%
Feb 5
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Web Appliance could allow an authenticated, remote…
Affected: 13.0.0-392; 13.0.5-007; 13.5.1-277; 13.5.4-038; 14.0.0-698; 14.2.0-620; +34 more
CVE-2024-20429
7.2
1%
Jul 17
A vulnerability in the web-based management interface of Cisco AsyncOS for Secure Email Gateway could allow an authenticated, remote attacker to execute arbitrary system commands…
Affected: 11.0.3-238; 11.1.0-069; 11.1.0-128; 11.1.0-131; 12.0.0-419; 12.1.0-071; +12 more
CVE-2017-12215
7.1
2%
Sep 21
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for the Cisco Email Security Appliance could allow an unauthenticated, remote attacker to cause an…
Affected: 9.0; 9.1; 9.1.2; 9.5; 9.6; 9.7; +1 more
CVE-2025-20185
6.7
0%
Feb 5
A vulnerability in the implementation of the remote access functionality of Cisco AsyncOS Software for Cisco Secure Email and Web Manager, Cisco Secure Email Gateway, and Cisco…
Affected: 13.0.0-392; 13.0.5-007; 13.5.1-277; 13.5.4-038; 14.0.0-698; 14.2.0-620; +8 more
CVE-2021-1425
6.5
1%
Nov 18
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Content Security Management Appliance (SMA) could allow an authenticated,…
Affected: before 13.8.0
CVE-2022-20942
6.5
1%
Nov 3
A vulnerability in the web-based management interface of Cisco Email Security Appliance (ESA), Cisco Secure Email and Web Manager, and Cisco Secure Web Appliance, formerly known…
Affected: before 14.2.1-015; 14.3.0 before 14.3.0-023; before 14.2.0-217; 14.3.0 before 14.3.0-115; before 12.0.5-011; 12.5 before 12.5.4-005; +1 more
CVE-2022-20867
6.5
1%
Nov 3
A vulnerability in web-based management interface of the of Cisco Email Security Appliance and Cisco Secure Email and Web Manager could allow an authenticated, remote attacker to…
Affected: 13.0 before 14.2.1; 12.0 before 14.2.0
CVE-2020-3547
6.5
1%
Sep 4
A vulnerability in the web-based management interface of Cisco AsyncOS software for Cisco Email Security Appliance (ESA), Cisco Content Security Management Appliance (SMA), and…
Affected: through 13.5.1-277; through 13.6.1-193; through 11.7.2-011
CVE-2019-1884
6.5
1%
Jul 4
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to cause a denial of…
Affected: 10.1 before 10.5.5-005; 11.5 before 11.5.2-020; 11.7 before 11.7.0-407
CVE-2024-20392
6.1
0%
May 15
A vulnerability in the web-based management API of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to conduct an HTTP…
Affected: 11.0.3-238; 11.1.0-069; 11.1.0-128; 12.0.0-419; 12.1.0-071; 12.1.0-087; +15 more
CVE-2024-20258
6.1
0%
May 15
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager and Secure Email Gateway could allow an unauthenticated,…
Affected: before 15.0.2-034; 15.5 before 15.5.1-055; before 15.5.1-024
CVE-2020-3568
5.8
1%
Oct 8
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass…
Affected: through 13.5.2
CVE-2020-3368
5.8
1%
Jun 18
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass…
Affected: before 13.5.0
CVE-2017-12353
5.8
2%
Nov 30
A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated,…
Affected: All versions, or not specified
CVE-2017-12218
5.8
2%
Sep 7
A vulnerability in the malware detection functionality within Advanced Malware Protection (AMP) of Cisco AsyncOS Software for Cisco Email Security Appliances (ESAs) could allow an…
Affected: All versions, or not specified
CVE-2018-0087
5.6
2%
Mar 8
A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to the FTP server of the device without a…
Affected: 10.5.1-296
CVE-2024-20504
5.4
0%
Nov 6
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager, Secure Email Gateway, and Secure Web Appliance could allow…
Affected: 14.0.0-698; 14.2.0-620; 14.2.1-020; 14.3.0-032; 15.0.0-104; 15.0.1-030; +31 more
CVE-2022-20781
5.4
1%
Apr 6
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to conduct a…
Affected: before 14.5
CVE-2020-3122
5.3
0%
Mar 4
A vulnerability in the web-based management interface of Cisco AsyncOS for Cisco Content Security Management Appliance (SMA) could allow an unauthenticated, remote attacker to…
Affected: 11.0.0-128
CVE-2025-20183
5.3
0%
Feb 5
A vulnerability in a policy-based Cisco Application Visibility and Control (AVC) implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an…
Affected: 11.8.0-414; 11.8.0-429; 11.8.0-453; 11.8.1-023; 11.8.3-018; 11.8.3-021; +34 more
CVE-2020-26082
5.3
1%
Aug 4
A vulnerability in the zip decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass…
Affected: before 13.5.2
CVE-2023-20215
5.3
1%
Aug 3
A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule,…
Affected: 11.7.0-406; 11.7.0-418; 11.7.1-006; 11.7.1-020; 11.7.1-049; 11.7.2-011; +16 more
CVE-2022-20952
5.3
1%
Mar 1
A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an…
Affected: 11.8 before 14.0.4; 14.5.0
CVE-2023-20057
5.3
1%
Jan 20
A vulnerability in the URL filtering mechanism of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL…
Affected: All versions, or not specified
CVE-2022-20675
5.3
1%
Apr 6
A vulnerability in the TCP/IP stack of Cisco Email Security Appliance (ESA), Cisco Web Security Appliance (WSA), and Cisco Secure Email and Web Manager, formerly Security…
Affected: 14.0 before 14.02.0-020; 12.5 before 14.1.0-239; 12.0 before 14.0.2-012
CVE-2021-1534
5.3
1%
Oct 6
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass…
Affected: before 14.0.1
CVE-2019-1983
5.3
2%
Sep 23
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) and Cisco Content Security Management Appliance (SMA)…
Affected: before 11.0.1-161; 12.0 through 12.5.0-633; before 11.0.3-251; 12.0 before 12.5.0-059
CVE-2020-3546
5.3
1%
Sep 4
A vulnerability in the web-based management interface of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to access…
Affected: through 13.5.1
CVE-2017-12303
5.3
2%
Nov 16
A vulnerability in the Advanced Malware Protection (AMP) file filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated,…
Affected: 10.1.1-234; 10.1.1-235
CVE-2025-20180
4.8
0%
Feb 5
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager and Secure Email Gateway could allow an authenticated,…
Affected: 12.8.1-002; 12.8.1-021; 13.0.0-249; 13.0.0-277; 13.6.1-201; 13.6.2-023; +32 more
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