CVE-2018-0053
vSRX Series: A local authentication vulnerability may lead to full control of a vSRX instance while the system is booting.
- 6.8MediumCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 57% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An authentication bypass vulnerability in the initial boot sequence of Juniper Networks Junos OS on vSRX Series may allow an attacker to gain full control of the system without authentication when the system is initially booted up. Affected releases are Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D30 on vSRX.
Timeline
ID reserved
By juniper
- 11 months later
· 11 months later
Published
- 6 years later
· 6 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 |
|---|---|---|---|
| juniperCNA (assigner) | 3.0 | Medium6.8 | CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.0 | Medium6.8 | CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.49% · top 57% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
- affected 15.1X49 – < 15.1X49-D30
What to do
Solution: The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D30, and all subsequent releases.
Workaround: There are no viable workarounds for this issue. Methods which may reduce, but not eliminate, the risk for exploitation of this problem, and which does not resolve the underlying problem include: • Restrict access to the hypervisor to only trusted administrators. • Disallow all access to the 'physical instance' of the vSRX instance while it is initially booting by disabling connectivity to devices hosting the instance; e.g. console servers, etc.
Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
References
2
- https://kb.juniper.net/JSA10887 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1041854 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_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-2018-0877 (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-2018-0053)Record last updated .