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Project

Cisco Secure Email Gateway

Cisco's email security product, sold as an appliance, virtual machine, or cloud service that filters mail for spam, malware, and data loss.

Known aliases

  • AsyncOS for Secure Email Gateway
  • Cisco Email Security Appliance
  • Cisco ESA
  • Cisco SEG
  • IronPort
  • IronPort Email Security Appliance
  • Secure Email Gateway
  • SEG

Current stories

securityConfirmed3 publishers

CISA gives agencies until October 17 to fix four exploited bugs in Cisco, Palo Alto and Ahsay products

CISA added four exploited flaws in PAN-OS, Cisco Secure Email Gateway and AhsayCBS to KEV with an October 17 federal deadline. We would take the Cisco gateway first, then AhsayCBS servers already patched once, then PAN-OS.

Perspective Coverage

3 publishers
Builder
Builder 20%
Operator
Operator 75%
Investor
Investor 5%

Reality

Evidence80
Adoption
Not scored
Hype gap0
Incentives
Not scored
Confidence78
securityConfirmed5 publishers

Exploited Cisco email gateway flaw lets a crafted attachment run commands as root

Cisco patched CVE-2026-76519, an exploited Secure Email Gateway flaw that gives unauthenticated attackers root through a crafted email attachment. Devices with File Reputation enabled and Content Scanner Tools earlier than 25.3.0.5525 are affected.

Perspective Coverage

5 publishers
Builder
Builder 13%
Operator
Operator 76%
Investor
Investor 11%

Reality

Evidence82
Adoption
Not scored
Hype gap+5
Incentives
Not scored
Confidence78
buildOne report1 publisher

Researcher reports an actively exploited root RCE in Cisco's Secure Email Gateway

Satyam Rastogi reports that Cisco patched a Secure Email Gateway zero-day that let unauthenticated attackers run commands as root, exploited before the fix. The post gives no CVE or fixed version, so SEG operators have the warning but no build to patch to.

Publishers:dev.to

Reality

Evidence25
Adoption
Not scored
Hype gap+20
Incentives
Not scored
Confidence35
securityConfirmed10 publishers

Cisco patches an ISE authentication bypass attackers used before the fix existed

CVE-2026-76460 scores a CVSS 10.0, affects Cisco ISE and ISE-PIC in every configuration, and has no workaround. CISA added it to the KEV catalog the day the patches shipped and gave federal agencies three days.

Perspective Coverage

10 publishers
Builder
Builder 16%
Operator
Operator 74%
Investor
Investor 10%

Reality

Evidence82
Adoption
Not scored
Hype gap+5
Incentives30
Confidence80
buildOne report1 publisher

Cisco email gateway flaw runs attacker SQL as root the moment it parses a message

CVE-2026-76461 lets a crafted email run SQL as root on Cisco Secure Email Gateway, with no workaround and a September 17 federal patch deadline from CISA. Because the trigger is mail parsing, every gateway in the mail path is in scope, whether or not it faces the internet.

Publishers:dev.to

Reality

Evidence55
Adoption
Not scored
Hype gap0
Incentives
Not scored
Confidence50
buildOne report1 publisher

CVE-2026-76441 lets unauthenticated attackers reach restricted functions on Cisco email gateways

CERT-In rates CVE-2026-76441 critical for letting unauthenticated remote attackers into restricted functions on Cisco email gateways 15.5 and earlier. The gateway inspects mail in both directions, so the fix belongs ahead of the next scheduled window, using the release Cisco's own advisory names.

Publishers:dev.to

Reality

Evidence45
Adoption
Not scored
Hype gap+5
Incentives
Not scored
Confidence50
securityOne report1 publisher

Attackers hit Cisco's email gateway with a SQL injection zero-day before the patch shipped

CVE-2026-76461 is one of three flaws confirmed under active attack in a single week. Revolut's customer records left by a different route, a request sent from an email address on a government agency's own domain.

Reality

Evidence42
Adoption62
Hype gap+12
Incentives58
Confidence47
securityOne report1 publisher

Cisco has already contacted Secure Email Cloud customers where it found compromise indicators

CVE-2026-76461 was in use before Monday's advisory and Cisco says multiple customers were likely compromised first, so a gateway patched this week still needs a hunt against indicators that root access can erase.

Publishers:cyberscoop.com

Reality

Evidence72
Adoption58
Hype gap0
Incentives55
Confidence66
buildOne report1 publisher

Cisco's remediation path for a suspect virtual email gateway starts with a new VM

For virtual appliances where exploitation is suspected, Cisco's advisory lists five actions before the box can be trusted again, one of which is installing fixed software. Owners of physical appliances are told to call TAC.

Publishers:cisco.com

Reality

Evidence66
Adoption
Not scored
Hype gap+6
Incentives70
Confidence62
securityOne report1 publisher

A crafted email is already getting root on unpatched Cisco Secure Email Gateways

CVE-2026-76461 is under active exploitation, hits every physical and virtual Secure Email Gateway whatever its configuration, and has no workaround. CISA gave federal civilian agencies until September 17 to install the fixed builds.

Reality

Evidence72
Adoption55
Hype gap0
Incentives60
Confidence68