CVE-2017-6155

On F5 BIG-IP 13.0.0, 12.0.0-12.1.3.1, 11.6.0-11.6.2, 11.4.1-11.5.5, or 11.2.1, malformed SPDY or HTTP/2 requests may result in a disruption of service to TMM. Data plane is only exposed when a SPDY or HTTP/2 profile is attached to a virtual server. There is no control plane exposure.

Published: 2018-04-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-6155 is rated Moderate Risk (54.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.32%). 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-2017-6155

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 0.65% 1.32% +0.67%
2 2025-03-30 1.01% 0.65% -0.37%
3 2025-03-29 — 1.01% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-6155

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-6155

Affected software / configurations for CVE-2017-6155

Vendor Product Version Raw CPE
f5 big-ip_local_traffic_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip_local_traffic_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip_local_traffic_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip_local_traffic_manager 11.2.1 cpe:2.3:a:f5:big-ip_local_traffic_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_local_traffic_manager 13.0.0 cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 11.2.1 cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 11.2.1 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 13.0.0 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager 11.2.1 cpe:2.3:a:f5:big-ip_access_policy_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager 13.0.0 cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_application_security_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_security_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_security_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_security_manager 11.2.1 cpe:2.3:a:f5:big-ip_application_security_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_application_security_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_edge_gateway >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
f5 big-ip_edge_gateway >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
f5 big-ip_edge_gateway >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
f5 big-ip_edge_gateway 11.2.1 cpe:2.3:a:f5:big-ip_edge_gateway:11.2.1:*:*:*:*:*:*:*
f5 big-ip_edge_gateway 13.0.0 cpe:2.3:a:f5:big-ip_edge_gateway:13.0.0:*:*:*:*:*:*:*
f5 big-ip_link_controller >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
f5 big-ip_link_controller >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
f5 big-ip_link_controller >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
f5 big-ip_link_controller 11.2.1 cpe:2.3:a:f5:big-ip_link_controller:11.2.1:*:*:*:*:*:*:*
f5 big-ip_link_controller 13.0.0 cpe:2.3:a:f5:big-ip_link_controller:13.0.0:*:*:*:*:*:*:*
f5 big-ip_policy_enforcement_manager >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
f5 big-ip_policy_enforcement_manager >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
f5 big-ip_policy_enforcement_manager >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
f5 big-ip_policy_enforcement_manager 11.2.1 cpe:2.3:a:f5:big-ip_policy_enforcement_manager:11.2.1:*:*:*:*:*:*:*
f5 big-ip_policy_enforcement_manager 13.0.0 cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:*
f5 big-ip_webaccelerator >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
f5 big-ip_webaccelerator >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
f5 big-ip_webaccelerator >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
f5 big-ip_webaccelerator 11.2.1 cpe:2.3:a:f5:big-ip_webaccelerator:11.2.1:*:*:*:*:*:*:*
f5 big-ip_webaccelerator 13.0.0 cpe:2.3:a:f5:big-ip_webaccelerator:13.0.0:*:*:*:*:*:*:*
f5 big-ip_websafe >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*
f5 big-ip_websafe >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*
f5 big-ip_websafe >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*
f5 big-ip_websafe 11.2.1 cpe:2.3:a:f5:big-ip_websafe:11.2.1:*:*:*:*:*:*:*
f5 big-ip_websafe 13.0.0 cpe:2.3:a:f5:big-ip_websafe:13.0.0:*:*:*:*:*:*:*
f5 big-ip_protocol_security_module >= 11.5.1, <= 11.5.5 cpe:2.3:a:f5:big-ip_protocol_security_module:*:*:*:*:*:*:*:*
f5 big-ip_protocol_security_module >= 11.6.1, <= 11.6.2 cpe:2.3:a:f5:big-ip_protocol_security_module:*:*:*:*:*:*:*:*
f5 big-ip_protocol_security_module >= 12.1.0, <= 12.1.3 cpe:2.3:a:f5:big-ip_protocol_security_module:*:*:*:*:*:*:*:*
f5 big-ip_protocol_security_module 11.2.1 cpe:2.3:a:f5:big-ip_protocol_security_module:11.2.1:*:*:*:*:*:*:*
f5 big-ip_protocol_security_module 13.0.0 cpe:2.3:a:f5:big-ip_protocol_security_module:13.0.0:*:*:*:*:*:*:*

References for CVE-2017-6155

cvelogic Threat Intelligence