CVE-2019-14899
At a glance
- Severity
- HIGH 7.4
- EPSS
- EPSS 0.84 % · percentile 58 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point, or an adjacent user, to determine if a connected user is using a VPN, make positive inferences about the websites they are visiting, and determine the correct sequence and acknowledgement numbers in use, allowing the bad actor to inject data into the TCP stream. This provides everything that is needed for an attacker to hijack active connections inside the VPN tunnel.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.4 | CVSS:3.0/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 7.4 | CVSS:3.0/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 2.0 | MEDIUM 4.9 | AV:A/AC:M/Au:S/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2019-6005
- GCVE · GCVE-0-2019-14899
CERT-FR advisories
- CERTFR-2026-AVI-0326 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0316 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2020-AVI-747 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
- CERTFR-2020-AVI-452 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*cpe:2.3:o:openbsd:openbsd:-:*:*:*:*:*:*:*cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*< 13.6cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*< 13.6cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*< 10.15.6cpe:2.3:o:apple:macos:11.0:*:*:*:*:*:*:*cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*< 13.4.8
Affected products
| Product | Versions |
|---|---|
| Red Hat · VPN | affected n/a |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14899
- https://openvpn.net/security-advisory/no-flaws-found-in-openvpn-software/
- https://support.apple.com/kb/HT211288
- https://support.apple.com/kb/HT211290
- https://support.apple.com/kb/HT211289
- http://seclists.org/fulldisclosure/2020/Jul/25
- http://seclists.org/fulldisclosure/2020/Jul/24
- http://seclists.org/fulldisclosure/2020/Jul/23
- http://www.openwall.com/lists/oss-security/2020/08/13/2
- https://support.apple.com/kb/HT211850
- http://www.openwall.com/lists/oss-security/2020/10/07/3
- https://support.apple.com/kb/HT211931
- http://seclists.org/fulldisclosure/2020/Nov/20
- http://seclists.org/fulldisclosure/2020/Dec/32
- http://www.openwall.com/lists/oss-security/2021/07/05/1
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |