Integer underflow in Cisco Adaptive Security Appliance Software
Priority MEDIUM 43CWE-191Published · Updated
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-191 and the CVSS impact.
Summary
A vulnerability in the Session Initiation Protocol (SIP) inspection module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a malicious SIP packet through an affected device. A successful exploit could allow the attacker to trigger an integer underflow, causing the software to try to read unmapped memory and resulting in a crash.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01842 79th 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 · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | before 9.4.4.37 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* | 9.5 to before 9.6.4.34; 9.7 to before 9.8.4.7; 9.9 to before 9.9.2.56; 9.10 to before 9.10.1.27; 9.12 to before 9.12.2.1 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* | 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_5550:-:*:*:*:*:*:*:* | 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:adaptive_security_appliance:*:*:*:*:*:*:*:* Versions before 9.4.4.37 Vulnerable ·Cisco
- cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* Versions 9.5 to before 9.6.4.34; 9.7 to before 9.8.4.7; 9.9 to before 9.9.2.56; 9.10 to before 9.10.1.27; 9.12 to before 9.12.2.1 Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* 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_5550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 3 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* | before 6.2.3.15; 6.3.0 to before 6.3.0.4; 6.4.0 to before 6.4.0.4 | Vulnerable | Cisco |
- cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* Versions before 6.2.3.15; 6.3.0 to before 6.3.0.4; 6.4.0 to before 6.4.0.4 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Cisco Adaptive Security Appliance (ASA) Software n/a
8 records Highest priority Priority MEDIUM 4 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2019-11370 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IKEv1 Denial of Service VulnerabilityPriority MEDIUM 47
- TI-2019-09493 Uncontrolled resource consumption in Cisco Adaptive Security Appliance SoftwarePriority MEDIUM 43
- TI-2019-09469 Memory corruption in Cisco Adaptive Security Appliance SoftwarePriority MEDIUM 42
Timeline
- 2026-10-02 Threatist record created from CVE-2019-12678
- 2026-10-03 Alias added: GHSA-8rj6-gvcm-h3h5
References
More Cisco Adaptive Security Appliance vulnerabilities
- TI-2020-02861 Uncontrolled resource consumption in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
- TI-2021-17312 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2020-03115 Uncontrolled resource consumption in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
- TI-2020-03075 Uncontrolled resource consumption in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
- TI-2020-02985 Unrestricted file upload in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
- TI-2021-17313 Stack-based buffer overflow in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
Sources
- CVE-2019-12678 · CVE Program
- CVE-2019-12678 · NVD
- FIRST EPSS
- GHSA-8rj6-gvcm-h3h5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences