CVE-2019-1748
Cisco IOS and IOS XE Software Network Plug-and-Play Agent Certificate Validation Vulnerability
- 7.4HighCVSS base score
- 1.2%Exploitation in 30 daysEPSS · top 32% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the Cisco Network Plug-and-Play (PnP) agent of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability exists because the affected software insufficiently validates certificates. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt and modify confidential information on user connections to the affected software.
Timeline
ID reserved
By cisco
- 4 months later
· 4 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.0 | High7.4 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.2% · top 32% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Affected products
Cisco · Cisco IOS and IOS XE Software
- affected 3.7.7S
- affected 3.9.1S
- affected 3.9.0S
- affected 3.9.2S
- affected 3.9.1aS
- affected 3.9.0aS
- affected 3.3.0SE
- affected 3.3.1SE
- affected 3.3.2SE
- affected 3.3.3SE
- affected 3.3.4SE
- affected 3.3.5SE
- affected 3.3.0XO
- affected 3.3.1XO
- affected 3.3.2XO
- affected 3.5.0E
- affected 3.5.1E
- affected 3.5.2E
- affected 3.5.3E
- affected 3.10.0S
- affected 3.10.1S
- affected 3.10.2S
- affected 3.10.3S
- affected 3.10.4S
- affected 3.10.5S
- affected 3.10.6S
- affected 3.10.2aS
- affected 3.10.2tS
- affected 3.10.7S
- affected 3.10.8S
- affected 3.10.8aS
- affected 3.10.9S
- affected 3.10.10S
- affected 3.11.1S
- affected 3.11.2S
- affected 3.11.0S
- affected 3.11.3S
- affected 3.11.4S
- affected 3.12.0S
- affected 3.12.1S
- and 142 more
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References
2
- 20190327 Cisco IOS and IOS XE Software Network Plug-and-Play Agent Certificate Validation Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 107619 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-10305 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-1748)Record last updated .