TI-2020-02856 Aliases CVE-2020-3298 GHSA-g29g-jh49-m5j2

Out-of-bounds read in Cisco Adaptive Security Appliance Software

MEDIUM 43CWE-125Published 2020-05-06 · Updated 2024-11-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory protection mechanisms while processing certain OSPF packets. An attacker could exploit this vulnerability by sending a series of malformed OSPF packets in a short period of time to an affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition for client traffic that is traversing the device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01985 80th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Adaptive Security Appliance (ASA) Software	all versions	—	No fix listed	CNA

Cisco Adaptive Security Appliance (ASA) Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 10

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:secure_firewall_threat_defense::::::::	6.2.0 to before 6.2.3.16; 6.3.0 to before 6.3.0.6; 6.4.0 to before 6.4.0.9; 6.5.0 to before 6.5.0.5	Vulnerable	Cisco
cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::	9.6.0 – 9.6.4.40; 9.8.0 – 9.8.4.17; 9.9.0 – 9.9.2.66; 9.10.0 – 9.10.1.37; 9.12.0 – 9.12.3.7; 9.13.0 – 9.13.1.7	Vulnerable	Cisco
cpe:2.3:h:cisco:asa_5506-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5506h-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5506w-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5508-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5516-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5525-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5545-x:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:asa_5555-x:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* Versions 6.2.0 to before 6.2.3.16; 6.3.0 to before 6.3.0.6; 6.4.0 to before 6.4.0.9; 6.5.0 to before 6.5.0.5 Vulnerable ·Cisco
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* Versions 9.6.0 – 9.6.4.40; 9.8.0 – 9.8.4.17; 9.9.0 – 9.9.2.66; 9.10.0 – 9.10.1.37; 9.12.0 – 9.12.3.7; 9.13.0 – 9.13.1.7 Vulnerable ·Cisco
cpe:2.3:h:cisco:asa_5506-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5506h-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5506w-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5508-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5516-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-3298
2026-10-03 Alias added: GHSA-g29g-jh49-m5j2

References

Advisory 1

20200506 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Malformed OSPF Packets Processing Denial of Service Vulnerability

TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
TI-2016-05454 Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on… KEVCVSS 3.1HIGH 8.8
TI-2023-06973 Authentication bypass in Cisco Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.1
TI-2026-82192 Denial of service in Cisco Secure Firewall ASA and FTD SSL VPN KEVCVSS 3.1HIGH 8.6
TI-2026-16533 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense… KEVCVSS 3.1HIGH 8.6
TI-2025-14657 Missing authorization in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1HIGH 8.6

See all 354 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences