CVE-2018-0009
SRX Series: Firewall bypass vulnerability when UUID with leading zeros is configured.
- 5.4MediumCVSS base score
- 1.3%Exploitation in 30 daysEPSS · top 30% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
On Juniper Networks SRX series devices, firewall rules configured to match custom application UUIDs starting with zeros can match all TCP traffic. Due to this issue, traffic that should have been blocked by other rules is permitted to flow through the device resulting in a firewall bypass condition. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D71 on SRX series; 12.3X48 versions prior to 12.3X48-D55 on SRX series; 15.1X49 versions prior to 15.1X49-D100 on SRX series.
Timeline
ID reserved
By juniper
- 55 days later
· 55 days later
Published
- 7 years later
· 7 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 | Medium5.4 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Modified | 3.0 | Medium5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
- affected 12.1X46 – < 12.1X46-D71
- affected 12.3X48 – < 12.3X48-D55
- affected 15.1X49 – < 15.1X49-D100
What to do
Solution: The following software releases have been updated to resolve this specific issue: 12.1X46-D71, 12.3X48-D55, 15.1X49-D100, 17.3R1, and all subsequent releases.
Workaround: Do not use UUIDs starting with zeros in the configuration.
Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
References
References3
- https://kb.juniper.net/JSA10836 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1040187 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 102491 (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-2018-0834 (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-2018-0009)Record last updated .