CVE-2015-6551

Veritas NetBackup 7.x through 7.5.0.7 and 7.6.0.x through 7.6.0.4 and NetBackup Appliance through 2.5.4 and 2.6.0.x through 2.6.0.4 do not use TLS for administration-console traffic to the NBU server, which allows remote attackers to obtain sensitive information by sniffing the network for key-exchange packets.

Published: 2016-05-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-6551 is rated Moderate Risk (46.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.15%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-6551

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.30% 1.15% +0.85%
2 2025-03-30 0.58% 0.30% -0.28%
3 2025-03-29 — 0.58% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-6551

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2015-6551

Affected software / configurations for CVE-2015-6551

Vendor Product Version Raw CPE
veritas netbackup_appliance 1.1.0.1 cpe:2.3:a:veritas:netbackup_appliance:1.1.0.1:*:*:*:*:*:*:*
veritas netbackup_appliance 1.1.0.2 cpe:2.3:a:veritas:netbackup_appliance:1.1.0.2:*:*:*:*:*:*:*
veritas netbackup_appliance 1.2 cpe:2.3:a:veritas:netbackup_appliance:1.2:*:*:*:*:*:*:*
veritas netbackup_appliance 2.0 cpe:2.3:a:veritas:netbackup_appliance:2.0:*:*:*:*:*:*:*
veritas netbackup_appliance 2.0.1 cpe:2.3:a:veritas:netbackup_appliance:2.0.1:*:*:*:*:*:*:*
veritas netbackup_appliance 2.0.2 cpe:2.3:a:veritas:netbackup_appliance:2.0.2:*:*:*:*:*:*:*
veritas netbackup_appliance 2.0.3 cpe:2.3:a:veritas:netbackup_appliance:2.0.3:*:*:*:*:*:*:*
veritas netbackup_appliance 2.5 cpe:2.3:a:veritas:netbackup_appliance:2.5:*:*:*:*:*:*:*
veritas netbackup_appliance 2.5.1 cpe:2.3:a:veritas:netbackup_appliance:2.5.1:*:*:*:*:*:*:*
veritas netbackup_appliance 2.5.2 cpe:2.3:a:veritas:netbackup_appliance:2.5.2:*:*:*:*:*:*:*
veritas netbackup_appliance 2.5.3 cpe:2.3:a:veritas:netbackup_appliance:2.5.3:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6 cpe:2.3:a:veritas:netbackup_appliance:2.6:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.0.2 cpe:2.3:a:veritas:netbackup_appliance:2.6.0.2:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.0.3 cpe:2.3:a:veritas:netbackup_appliance:2.6.0.3:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.0.4 cpe:2.3:a:veritas:netbackup_appliance:2.6.0.4:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.1 cpe:2.3:a:veritas:netbackup_appliance:2.6.1:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.1.1 cpe:2.3:a:veritas:netbackup_appliance:2.6.1.1:*:*:*:*:*:*:*
veritas netbackup_appliance 2.6.1.2 cpe:2.3:a:veritas:netbackup_appliance:2.6.1.2:*:*:*:*:*:*:*
veritas netbackup_appliance 2.7.1 cpe:2.3:a:veritas:netbackup_appliance:2.7.1:*:*:*:*:*:*:*
veritas netbackup 7.0 cpe:2.3:a:veritas:netbackup:7.0:*:*:*:*:*:*:*
veritas netbackup 7.0.1 cpe:2.3:a:veritas:netbackup:7.0.1:*:*:*:*:*:*:*
veritas netbackup 7.1.0.1 cpe:2.3:a:veritas:netbackup:7.1.0.1:*:*:*:*:*:*:*
veritas netbackup 7.1.0.2 cpe:2.3:a:veritas:netbackup:7.1.0.2:*:*:*:*:*:*:*
veritas netbackup 7.1.0.3 cpe:2.3:a:veritas:netbackup:7.1.0.3:*:*:*:*:*:*:*
veritas netbackup 7.1.0.4 cpe:2.3:a:veritas:netbackup:7.1.0.4:*:*:*:*:*:*:*
veritas netbackup 7.5.0.1 cpe:2.3:a:veritas:netbackup:7.5.0.1:*:*:*:*:*:*:*
veritas netbackup 7.5.0.3 cpe:2.3:a:veritas:netbackup:7.5.0.3:*:*:*:*:*:*:*
veritas netbackup 7.5.0.4 cpe:2.3:a:veritas:netbackup:7.5.0.4:*:*:*:*:*:*:*
veritas netbackup 7.5.0.5 cpe:2.3:a:veritas:netbackup:7.5.0.5:*:*:*:*:*:*:*
veritas netbackup 7.5.0.6 cpe:2.3:a:veritas:netbackup:7.5.0.6:*:*:*:*:*:*:*
veritas netbackup 7.5.0.7 cpe:2.3:a:veritas:netbackup:7.5.0.7:*:*:*:*:*:*:*
veritas netbackup 7.6.0.2 cpe:2.3:a:veritas:netbackup:7.6.0.2:*:*:*:*:*:*:*
veritas netbackup 7.6.0.3 cpe:2.3:a:veritas:netbackup:7.6.0.3:*:*:*:*:*:*:*
veritas netbackup 7.6.0.4 cpe:2.3:a:veritas:netbackup:7.6.0.4:*:*:*:*:*:*:*
veritas netbackup 7.6.1.1 cpe:2.3:a:veritas:netbackup:7.6.1.1:*:*:*:*:*:*:*
veritas netbackup 7.6.1.2 cpe:2.3:a:veritas:netbackup:7.6.1.2:*:*:*:*:*:*:*
veritas netbackup 7.7.1 cpe:2.3:a:veritas:netbackup:7.7.1:*:*:*:*:*:*:*

References for CVE-2015-6551

cvelogic Threat Intelligence