CVE-2015-4191
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload)...
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.
Exploit likelihood
What each source reports
NVD Score used
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.
- Record
CVE-2015-4191- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.
- Record
CVE-2015-4191- Updated
- 2026-11-02
EUVDEUVD-2015-4214 No score
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.
- Record
EUVD-2015-4214- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-574v-ffv3-5fcx No score
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload)...
Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.
- Record
GHSA-574v-ffv3-5fcx- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-4191 is a medium vulnerability (CVSS 5.0) in Cisco Ios Xr, published June 19, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.94%, the 87th percentile. No source names a fixed version.