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CVE-2015-7755 Details

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 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: CISA-ADPCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-7755	CISA-ADP	US Government Resource
http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/	CVE	Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713	CVE	ExploitVendor Advisory
https://adamcaudill.com/2015/12/17/much-ado-about-juniper/	CVE	Third Party Advisory
https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554	CVE	Vendor Advisory
https://github.com/hdm/juniper-cve-2015-7755	CVE	Third Party Advisory
http://twitter.com/cryptoron/statuses/677900647560253442	CVE	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	Permissions Required
http://www.kb.cert.org/vuls/id/640184	CVE	Third Party Advisory
http://www.securityfocus.com/bid/79626	CVE	Broken Link
http://www.securitytracker.com/id/1034489	CVE	Broken Link
http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/	CVE	Third Party Advisory
http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/	[email protected]	Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713	[email protected]	ExploitVendor Advisory
https://adamcaudill.com/2015/12/17/much-ado-about-juniper/	[email protected]	Third Party Advisory
https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554	[email protected]	Vendor Advisory
https://github.com/hdm/juniper-cve-2015-7755	[email protected]	Third Party Advisory
http://twitter.com/cryptoron/statuses/677900647560253442	[email protected]	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/	[email protected]	Permissions Required
http://www.kb.cert.org/vuls/id/640184	[email protected]	Third Party Advisory
http://www.securityfocus.com/bid/79626	[email protected]	Broken Link
http://www.securitytracker.com/id/1034489	[email protected]	Broken Link
http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-government-backdoors/	[email protected]	Third Party Advisory

see all 23 references

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	Oct 2, 2025	Oct 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	[email protected]
CWE-287	Improper Authentication	CISA-ADP

Affected Products

Product	Versions
juniper screenos	6.3.0 r17 6.3.0 r18 6.3.0 r19 6.3.0 r20
CPE 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:::::: Remediation No remediation found in references.

Change History

14 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Apr 21, 2026	Modified Analysis	[email protected]
Oct 22, 2025	CVE Modified	CISA-ADP
Oct 21, 2025	CVE Modified	CISA-ADP
Oct 21, 2025	CVE Modified	CISA-ADP
Oct 3, 2025	CVE CISA KEV Update	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
Oct 1, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 7, 2016	CVE Modified	[email protected]
Nov 28, 2016	CVE Modified	[email protected]
Dec 21, 2015	Modified Analysis	[email protected]
Dec 21, 2015	Initial Analysis	[email protected]