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Description

Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.    This vulnerability is due to lack of proper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending a crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart causing a a denial of service (DoS) condition.

PUBLISHED Reserved 2025-10-08 | Published 2026-03-04 | Updated 2026-03-04 | Assigner cisco




MEDIUM: 5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Problem types

Divide By Zero

Product status

Default status
unknown

3.0.0
affected

3.0.2
affected

3.0.3
affected

3.0.1
affected

3.1.0
affected

3.0.4
affected

3.1.1
affected

3.1.2
affected

3.2.0
affected

3.0.5
affected

3.2.1
affected

3.0.6
affected

3.2.2
affected

3.2.3
affected

3.2.4
affected

4.0.0
affected

4.0.1
affected

4.0.2
affected

4.0.3
affected

4.1.0
affected

4.1.1
affected

4.1.2
affected

4.1.3
affected

4.1.4
affected

4.2.0
affected

4.2.1
affected

4.1.5
affected

4.2.2
affected

4.2.X
affected

4.2.3
affected

4.2.4
affected

4.2.6
affected

4.1.6
affected

4.3.0
affected

4.3.1
affected

4.3.2
affected

4.3.3
affected

4.4.0
affected

4.4.1
affected

4.4.2
affected

4.4.3
affected

4.1.7
affected

5.0.0
affected

5.0.1
affected

5.0.2
affected

5.1.0
affected

5.1.1
affected

5.1.2
affected

5.1.3
affected

5.2.0
affected

5.2.1
affected

5.3.0
affected

5.3.1
affected

Default status
unknown

7.2.0
affected

7.2.0.1
affected

7.2.1
affected

7.3.0
affected

7.2.2
affected

7.2.3
affected

7.3.1
affected

7.2.4
affected

7.2.5
affected

7.2.4.1
affected

7.3.1.1
affected

7.4.0
affected

7.2.5.1
affected

7.4.1
affected

7.2.6
affected

7.4.1.1
affected

7.2.7
affected

7.2.5.2
affected

7.3.1.2
affected

7.2.8
affected

7.6.0
affected

7.4.2
affected

7.2.8.1
affected

7.4.2.1
affected

7.2.9
affected

7.7.0
affected

7.4.2.2
affected

7.2.10
affected

7.6.1
affected

7.4.2.3
affected

7.6.2
affected

7.7.10
affected

7.6.2.1
affected

7.7.10.1
affected

7.4.2.4
affected

7.2.10.2
affected

7.4.3
affected

Default status
unknown

17.12.1a
affected

17.12.2
affected

17.13.1a
affected

17.12.3
affected

17.14.1a
affected

17.12.4
affected

17.12.3a
affected

17.15.1a
affected

17.16.1a
affected

17.12.4a
affected

17.15.2c
affected

17.12.4b
affected

17.15.2a
affected

17.12.5
affected

17.17.1
affected

17.12.5a
affected

17.15.3a
affected

17.15.3
affected

17.12.5b
affected

17.12.5c
affected

17.15.4
affected

17.18.1
affected

17.18.1a
affected

17.12.6
affected

17.15.4c
affected

17.12.5d
affected

17.18.2
affected

References

sec.cloudapps.cisco.com/...co-sa-ftd-snort3-vbavuls-96UcVVed (cisco-sa-ftd-snort3-vbavuls-96UcVVed)

cve.org (CVE-2026-20057)

nvd.nist.gov (CVE-2026-20057)

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