Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH or (2) TELNET session.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:screenos:6.3.0:r17:*:*:*:*:*:* | 6.3.0 r17 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:screenos:6.3.0:r18:*:*:*:*:*:* | 6.3.0 r18 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:screenos:6.3.0:r19:*:*:*:*:*:* | 6.3.0 r19 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:screenos:6.3.0:r20:*:*:*:*:*:* | 6.3.0 r20 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:screenos:6.3.0:r17:*:*:*:*:*:* Versions 6.3.0 r17 Vulnerable ·Juniper
- cpe:2.3:o:juniper:screenos:6.3.0:r18:*:*:*:*:*:* Versions 6.3.0 r18 Vulnerable ·Juniper
- cpe:2.3:o:juniper:screenos:6.3.0:r19:*:*:*:*:*:* Versions 6.3.0 r19 Vulnerable ·Juniper
- cpe:2.3:o:juniper:screenos:6.3.0:r20:*:*:*:*:*:* Versions 6.3.0 r20 Vulnerable ·Juniper
Remediation
No fixed version listed by the sources yet.
Timeline
- 2025-10-02 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2015-7755
- 2026-10-03 Alias added: GHSA-43vr-5w6h-pr3g
References
Advisory 6
- http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/
- http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/
- VU#640184
- https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554
- https://github.com/hdm/juniper-cve-2015-7755
- https://adamcaudill.com/2015/12/17/much-ado-about-juniper/
More Juniper Screenos vulnerabilities
- TI-2017-01617 ScreenOS: XSS vulnerability in ScreenOS Firewall CVSS 3.0CRITICAL 9.6
- TI-2015-06435 Juniper ScreenOS before 6.3.0r21, when ssh-pka is configured and enabled, allows remote… CVSS 3.0HIGH 8.1
- TI-2014-02278 Juniper ScreenOS 6.3 and earlier allows remote attackers to cause a denial of service… CVSS 2.0HIGH 7.8
- TI-2017-01620 ScreenOS: XSS vulnerability in ScreenOS Firewall CVSS 3.0HIGH 8.4
- TI-2017-01619 ScreenOS: XSS vulnerability in ScreenOS Firewall CVSS 3.0HIGH 8.4
- TI-2017-01618 ScreenOS: XSS vulnerability in ScreenOS Firewall CVSS 3.0HIGH 8.4
Sources
- CVE-2015-7755 · CVE Program
- CVE-2015-7755 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-43vr-5w6h-pr3g · GitHub Advisory Database · CC BY 4.0
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