CVE-2015-7755
Detail
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
References to Advisories, Solutions, and Tools
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URL
Source(s)
Tag(s)
http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/
CVE, MITRE
Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713
CVE, MITRE
Exploit
Vendor Advisory
http://twitter.com/cryptoron/statuses/677900647560253442
CVE, MITRE
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/
CVE, MITRE
Permissions Required
http://www.kb.cert.org/vuls/id/640184
CVE, MITRE
Third Party Advisory
http://www.securityfocus.com/bid/79626
CVE, MITRE
Broken Link
http://www.securitytracker.com/id/1034489
CVE, MITRE
Broken Link
http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/
CVE, MITRE
Third Party Advisory
https://adamcaudill.com/2015/12/17/much-ado-about-juniper/
CVE, MITRE
Third Party Advisory
https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554
CVE, MITRE
Vendor Advisory
https://github.com/hdm/juniper-cve-2015-7755
CVE, MITRE
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755
CISA-ADP
US Government Resource
This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference
CISA's BOD 22-01 and Known
Exploited Vulnerabilities Catalog for further guidance and requirements.
Vulnerability Name
Date Added
Due Date
Required Action
Juniper ScreenOS Improper Authentication Vulnerability
10/02/2025
10/23/2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-287
Improper Authentication
NIST
CISA-ADP
Change History
12 change records found show changes
Modified Analysis by NIST 4/21/2026 12:27:21 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
Reference Type
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755 Types: US Government Resource
Added
Reference Type
CVE: http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/ Types: Third Party Advisory
Added
Reference Type
CVE: http://twitter.com/cryptoron/statuses/677900647560253442 Types: Broken Link
Added
Reference Type
CVE: http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/ Types: Permissions Required
Added
Reference Type
CVE: http://www.kb.cert.org/vuls/id/640184 Types: Third Party Advisory
Added
Reference Type
CVE: http://www.securityfocus.com/bid/79626 Types: Broken Link
Added
Reference Type
CVE: http://www.securitytracker.com/id/1034489 Types: Broken Link
Added
Reference Type
CVE: http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/ Types: Third Party Advisory
Added
Reference Type
CVE: https://adamcaudill.com/2015/12/17/much-ado-about-juniper/ Types: Third Party Advisory
Added
Reference Type
CVE: https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554 Types: Vendor Advisory
Added
Reference Type
CVE: https://github.com/hdm/juniper-cve-2015-7755 Types: Third Party Advisory
Added
Reference Type
MITRE: http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/ Types: Third Party Advisory
Added
Reference Type
MITRE: http://twitter.com/cryptoron/statuses/677900647560253442 Types: Broken Link
Added
Reference Type
MITRE: http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/ Types: Permissions Required
Added
Reference Type
MITRE: http://www.kb.cert.org/vuls/id/640184 Types: Third Party Advisory
Added
Reference Type
MITRE: http://www.securityfocus.com/bid/79626 Types: Broken Link
Added
Reference Type
MITRE: http://www.securitytracker.com/id/1034489 Types: Broken Link
Added
Reference Type
MITRE: http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/ Types: Third Party Advisory
Added
Reference Type
MITRE: https://adamcaudill.com/2015/12/17/much-ado-about-juniper/ Types: Third Party Advisory
Added
Reference Type
MITRE: https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554 Types: Vendor Advisory
Added
Reference Type
MITRE: https://github.com/hdm/juniper-cve-2015-7755 Types: Third Party Advisory
CVE Modified by CISA-ADP 10/21/2025 8:15:46 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755
CVE Modified by CISA-ADP 10/21/2025 4:16:28 PM
Action
Type
Old Value
New Value
Removed
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755
CVE Modified by CISA-ADP 10/21/2025 3:16:35 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755
CVE CISA KEV Update by Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government 10/02/2025 9:00:02 PM
Action
Type
Old Value
New Value
Added
Date Added
2025-10-02
Added
Due Date
2025-10-23
Added
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.
Added
Vulnerability Name
Juniper ScreenOS Improper Authentication Vulnerability
CVE Modified by CISA-ADP 10/01/2025 12:15:45 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CWE
CWE-287
CVE Modified by CVE 11/20/2024 9:37:20 PM
Action
Type
Old Value
New Value
Added
Reference
http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/
Added
Reference
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713
Added
Reference
http://twitter.com/cryptoron/statuses/677900647560253442
Added
Reference
http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work-with-government-to-add-unauthorized-code-to-network-gear/
Added
Reference
http://www.kb.cert.org/vuls/id/640184
Added
Reference
http://www.securityfocus.com/bid/79626
Added
Reference
http://www.securitytracker.com/id/1034489
Added
Reference
http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/
Added
Reference
https://adamcaudill.com/2015/12/17/much-ado-about-juniper/
Added
Reference
https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554
Added
Reference
https://github.com/hdm/juniper-cve-2015-7755
CVE Modified by MITRE 5/13/2024 11:42:28 PM
Action
Type
Old Value
New Value
CVE Modified by MITRE 12/07/2016 1:25:04 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.kb.cert.org/vuls/id/640184 [No Types Assigned]
Added
Reference
http://www.securitytracker.com/id/1034489 [No Types Assigned]
CVE Modified by MITRE 11/28/2016 2:44:31 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.securityfocus.com/bid/79626 [No Types Assigned]
Modified Analysis by NIST 12/21/2015 1:25:21 PM
Action
Type
Old Value
New Value
Added
CVSS V2
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Added
CWE
CWE-287
Added
CPE Configuration
Configuration 1
OR
*cpe:2.3:o:juniper:screenos:6.3.0:r17:*:*:*:*:*:*
*cpe:2.3:o:juniper:screenos:6.3.0:r18:*:*:*:*:*:*
*cpe:2.3:o:juniper:screenos:6.3.0:r19:*:*:*:*:*:*
*cpe:2.3:o:juniper:screenos:6.3.0:r20:*:*:*:*:*:*
Changed
Reference Type
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713 No Types Assigned
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713 Advisory, Exploit
Initial CVE Analysis 12/21/2015 10:25:53 AM
Action
Type
Old Value
New Value
Quick Info
CVE Dictionary Entry: CVE-2015-7755 NVD
Published Date: 12/19/2015 NVD
Last Modified: 04/21/2026
Source: MITRE