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
Published Dec 19, 2015 ·Due Oct 23, 2025
9.8
CRITICALCVSS 3.1
EPSS 61.14%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
Date Added
Oct 2, 2025
Patch Due
Oct 23, 2025
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Oct 2, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 61.14% (0.61139) | 99.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 61.14% (0.61139) | 99.04th | v5 (v2026.06.15) |
| Jan 18, 2026 | 85.63% (0.85629) | 99.34th | v4 (v2025.03.14) |
| Oct 17, 2025 | 88.98% (0.88977) | 99.49th | v4 (v2025.03.14) |
| Oct 3, 2025 | 91.21% (0.91206) | 99.65th | v4 (v2025.03.14) |
| Mar 30, 2025 | 87.21% (0.87208) | 99.41th | v4 (v2025.03.14) |
| Mar 29, 2025 | 89.16% (0.89160) | 99.44th | v4 (v2025.03.14) |
| Mar 28, 2025 | 87.21% (0.87208) | 99.41th | v4 (v2025.03.14) |
| Mar 17, 2025 | 89.16% (0.89160) | 99.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 96.56% (0.96564) | 99.67th | v3 (v2023.03.01) |
| Oct 11, 2023 | 97.05% (0.97054) | 99.67th | v3 (v2023.03.01) |
| Sep 8, 2023 | 96.97% (0.96967) | 99.62th | v3 (v2023.03.01) |
| May 31, 2023 | 97.02% (0.97020) | 99.59th | v3 (v2023.03.01) |
| Apr 27, 2023 | 97.06% (0.97055) | 99.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.09% (0.97087) | 99.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 88.93% (0.88933) | 99.81th | v2 (v2022.01.01) |
| Feb 4, 2022 | 88.93% (0.88933) | 99.78th | v2 (v2022.01.01) |
References (12)
- http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/ Third Party Advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713 ExploitVendor Advisory
- http://twitter.com/cryptoron/statuses/677900647560253442 Broken Link
- http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/ Permissions Required
- http://www.kb.cert.org/vuls/id/640184 third-party-advisoryThird Party Advisory
- http://www.securityfocus.com/bid/79626 vdb-entryBroken Link
- http://www.securitytracker.com/id/1034489 vdb-entryBroken Link
- http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/ Third Party Advisory
- https://adamcaudill.com/2015/12/17/much-ado-about-juniper/ Third Party Advisory
- https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554 Vendor Advisory
- https://github.com/hdm/juniper-cve-2015-7755 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755 government-resourceUS Government Resource
Change history (0)
No recorded changes yet.