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Unrated severityNVD Advisory· Published Nov 6, 2015· Updated Jun 17, 2026

CVE-2015-6291

CVE-2015-6291

Description

Cisco AsyncOS before 8.5.7-043, 9.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-046 on Email Security Appliance (ESA) devices mishandles malformed fields during body-contains, attachment-contains, every-attachment-contains, attachment-binary-contains, dictionary-match, and attachment-dictionary-match filtering, which allows remote attackers to cause a denial of service (memory consumption) via a crafted attachment in an e-mail message, aka Bug ID CSCuv47151.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

17
  • Cisco Systems, Inc./Email Security Appliance Firmware16 versions
    cpe:2.3:a:cisco:email_security_appliance:7.7.0-000:*:*:*:*:*:*:*+ 15 more
    • cpe:2.3:a:cisco:email_security_appliance:7.7.0-000:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:7.7.1-000:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.0_base:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.6-052:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.6-073:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.6-074:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.6-106:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.6-113:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5.7-042:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:8.5_base:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.0.0-212:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.0.0-461:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.0.5-000:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.1.0-032:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:email_security_appliance:9.6.0-042:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Asyncosllm-fuzzy
    Range: < 8.5.7-043 (8.x), < 9.1.1-023 (9.x), < 9.6.0-046 (9.5.x, 9.6.x)

Patches

Vulnerability mechanics

References

2

News mentions

0

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