VIR Vulnerability Intelligence Relay

CVE-2015-6291

high
Published 2015-11-06 · Modified 2026-05-06
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.8

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.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact
VendorProductVersionsFixed
cisco ciscoemail_security_appliance7.7.0-000
cisco ciscoemail_security_appliance7.7.1-000
cisco ciscoemail_security_appliance8.0_base
cisco ciscoemail_security_appliance8.5.6-052
cisco ciscoemail_security_appliance8.5.6-073
cisco ciscoemail_security_appliance8.5.6-074
cisco ciscoemail_security_appliance8.5.6-106
cisco ciscoemail_security_appliance8.5.6-113
cisco ciscoemail_security_appliance8.5.7-042
cisco ciscoemail_security_appliance8.5_base
cisco ciscoemail_security_appliance9.0.0
cisco ciscoemail_security_appliance9.0.0-212
cisco ciscoemail_security_appliance9.0.0-461
cisco ciscoemail_security_appliance9.0.5-000
cisco ciscoemail_security_appliance9.1.0-032
cisco ciscoemail_security_appliance9.6.0-042

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.