7.8

CVE-2015-6291: cisco email_security_appliance_firmware Improper Input Validation

CVSS: 7.8v2.0HighModified
Published 06-11-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-6291 is a high (CVSS 7.8) Improper Input Validation vulnerability in cisco email_security_appliance_firmware. EPSS estimates a 1.93% chance of exploitation in the next 30 days, higher than 79.6% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.93%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-11-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.93%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.93% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.93%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco1 product
  • email_security_appliance_firmware7.7.0-000 | 7.7.1-000 | 8.0_base | 8.5.6-052 | 8.5.6-073 | 8.5.6-074 | 8.5.6-106 | 8.5.6-113 | 8.5.7-042 | 8.5_base | 9.0.0 | 9.0.0-212 | 9.0.0-461 | 9.0.5-000 | 9.1.0-032 | 9.6.0-042

1 vendor · 1 product

References

2 links