CVE-2019-0042
Incorrect messages from Juniper Identity Management Service (JIMS) can trigger Denial of Service or firewall bypass conditions for SRX series devices
- 5.7MediumCVSS base score
- 0.29%Exploitation in 30 daysEPSS · top 78% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Juniper Identity Management Service (JIMS) for Windows versions prior to 1.1.4 may send an incorrect message to associated SRX services gateways. This may allow an attacker with physical access to an existing domain connected Windows system to bypass SRX firewall policies, or trigger a Denial of Service (DoS) condition for the network.
Timeline
ID reserved
By juniper
- 6 months later
· 6 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 |
|---|---|---|---|
| juniperCNA (assigner) | 3.0 | Medium5.7 | CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H |
| NVDNVD · Modified | 3.1 | Medium4.2 | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.29% · top 78% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.7.
Affected products
Juniper Networks · Juniper Identity Management Service
- affected unspecified – < 1.1.4
What to do
Solution: The following software releases have been updated to resolve this specific issue: 1.1.4 and all subsequent releases. If suspicious or unusual usernames or IP addresses entries are present in the SRX auth table, they need to be removed from the SRX auth table.
Workaround: On the domain controller(s), edit GPO policy for Computer Configuration->Policies->Windows Settings->Security Settings->Local Policies->Audit Policy. Uncheck "Failure" for "Audit account logon events". This option is unchecked by default. In the cmd prompt, enter "gpupdate /force" to immediately update the policy change.
Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability. If the issue is being exploited to bypass SRX firewall policies, suspicious or unusual usernames or IP addresses entries may be present in the SRX auth table.
References
References1
- https://kb.juniper.net/JSA10934 (opens in a new tab)x_refsource_CONFIRMx_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-2019-0849 (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-2019-0042)Record last updated .