CVE-2019-15261
No exploitation reported by the sources we read.
- Published2019-10-16
- Fixed in8.9.111.0 · 8.8.125.0 · 8.5.151.0
- WeaknessCWE-20
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in the Point-to-Point Tunneling Protocol (PPTP) VPN packet processing functionality in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Generic Routing Encapsulation (GRE) frames that pass through the data plane of an affected AP. An attacker could exploit this vulnerability by associating to a vulnerable AP, initiating a PPTP VPN connection to an arbitrary PPTP VPN server, and sending a malicious GRE frame through the data plane of the AP. A successful exploit could allow the attacker to cause an internal process of the targeted AP to crash, which in turn would cause the AP to reload. The AP reload would cause a DoS condition for clients that are associated with the AP.
Timeline
dates in UTC- 2019-10-1619:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-15261?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-15261?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.9 | ≥ 8.9, < 8.9.111.0 | 8.9.111.0 | NVD |
| 8.8 | ≥ 8.8, < 8.8.125.0 | 8.8.125.0 | NVD |
| 8.x | ≥ 8.4, < 8.5.151.0 | 8.5.151.0 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.9 | ≥ 8.9, < 8.9.111.0 | 8.9.111.0 | NVD |
| 8.8 | ≥ 8.8, < 8.8.125.0 | 8.8.125.0 | NVD |
| 8.x | ≥ 8.4, < 8.5.151.0 | 8.5.151.0 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.9 | ≥ 8.9, < 8.9.111.0 | 8.9.111.0 | NVD |
| 8.8 | ≥ 8.8, < 8.8.125.0 | 8.8.125.0 | NVD |
| 8.x | ≥ 8.4, < 8.5.151.0 | 8.5.151.0 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco aironet 1810 firmware to 8.9.111.0 · 8.8.125.0 · 8.5.151.0
Advisories and patches
- tools.cisco.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Published
- 2019-10-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-15261?
Is CVE-2019-15261 actively exploited?
What is the CVSS score for CVE-2019-15261?
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Related vulnerabilities
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