Cisco IOS 15.5(3)M on Integrated Services Router (ISR) 800, 819, and 829 devices allows…
Priority MEDIUM 40CWE-399Published · 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 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Cisco IOS 15.5(3)M on Integrated Services Router (ISR) 800, 819, and 829 devices allows remote attackers to cause a denial of service (memory consumption) via crafted TCP packets on the SSH port, aka Bug ID CSCuu13476.
Why it matters now
EPSS 0.04399 91st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios:15.5\(3\)m:*:*:*:*:*:*:* | 15.5(3)m | Vulnerable | Cisco |
| cpe:2.3:h:cisco:800_integrated_services_router:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:819_integrated_services_router:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:829_integrated_services_router:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
- cpe:2.3:o:cisco:ios:15.5\(3\)m:*:*:*:*:*:*:* Versions 15.5(3)m Vulnerable ·Cisco
- cpe:2.3:h:cisco:800_integrated_services_router:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:819_integrated_services_router:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:829_integrated_services_router:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-6289
- 2026-10-03 Alias added: GHSA-3g64-fqmg-p75w
References
More Cisco Ios vulnerabilities
- TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
- TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
- TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
- TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
- TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
- TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2015-6289 · CVE Program
- CVE-2015-6289 · NVD
- FIRST EPSS
- GHSA-3g64-fqmg-p75w · GitHub Advisory Database · CC BY 4.0
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