CVE-2020-5929

In versions 13.0.0-13.0.0 HF2, 12.1.0-12.1.2 HF1, and 11.6.1-11.6.2, BIG-IP platforms with Cavium Nitrox SSL hardware acceleration cards, a Virtual Server configured with a Client SSL profile, and using Anonymous (ADH) or Ephemeral (DHE) Diffie-Hellman key exchange and Single DH use option not enabled in the options list may be vulnerable to crafted SSL/TLS Handshakes that may result with a PMS (Pre-Master Secret) that starts in a 0 byte and may lead to a recovery of plaintext messages as BIG-IP TLS/SSL ADH/DHE sends different error messages acting as an oracle. Similar error messages when PMS starts with 0 byte coupled with very precise timing measurement observation may also expose this vulnerability.

Published: 2020-09-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-5929 is rated Moderate Risk (48.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.67%). 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-2020-5929

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 2025-11-21 0.54% 0.67% +0.13%
2 2025-11-18 0.67% 0.54% -0.13%
3 2025-03-30 — 0.67% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-5929

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/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]
2.6 2.0 LOW
AV:N/AC:H/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:H)
Exploitation requires uncommon or highly specific conditions.
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.
 4.9 2.9 [email protected]

Weakness enumeration for CVE-2020-5929

Affected software / configurations for CVE-2020-5929

Vendor Product Version Raw CPE
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, < 12.1.2 cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
f5 big-ip_access_policy_manager 11.6.2 cpe:2.3:a:f5:big-ip_access_policy_manager:11.6.2:-:*:*:*:*:*:*
f5 big-ip_access_policy_manager 12.1.2 cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.2:-:*:*:*:*:*:*
f5 big-ip_access_policy_manager 12.1.2 cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.2:hotfix1:*:*:*:*:*:*
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_access_policy_manager 13.0.0 cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_access_policy_manager 13.0.0 cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:hotfix2:*:*:*:*:*:*
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, < 12.1.2 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 11.6.2 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:11.6.2:-:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 12.1.2 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.2:-:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 12.1.2 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.2:hotfix1:*:*:*:*:*:*
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_advanced_firewall_manager 13.0.0 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_advanced_firewall_manager 13.0.0 cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 11.6.2 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:11.6.2:-:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 12.1.2 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.2:-:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 12.1.2 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 13.0.0 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:13.0.0:-:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 13.0.0 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_advanced_web_application_firewall 13.0.0 cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_analytics >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
f5 big-ip_analytics >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
f5 big-ip_analytics 11.6.2 cpe:2.3:a:f5:big-ip_analytics:11.6.2:-:*:*:*:*:*:*
f5 big-ip_analytics 12.1.2 cpe:2.3:a:f5:big-ip_analytics:12.1.2:-:*:*:*:*:*:*
f5 big-ip_analytics 12.1.2 cpe:2.3:a:f5:big-ip_analytics:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_analytics 13.0.0 cpe:2.3:a:f5:big-ip_analytics:13.0.0:-:*:*:*:*:*:*
f5 big-ip_analytics 13.0.0 cpe:2.3:a:f5:big-ip_analytics:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_analytics 13.0.0 cpe:2.3:a:f5:big-ip_analytics:13.0.0:hotfix2:*:*:*:*:*:*
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, < 12.1.2 cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 11.6.2 cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.6.2:-:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 12.1.2 cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.2:-:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 12.1.2 cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.2:hotfix1:*:*:*:*:*:*
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_application_acceleration_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_application_acceleration_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:hotfix2:*:*:*:*:*:*
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, < 12.1.2 cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
f5 big-ip_application_security_manager 11.6.2 cpe:2.3:a:f5:big-ip_application_security_manager:11.6.2:-:*:*:*:*:*:*
f5 big-ip_application_security_manager 12.1.2 cpe:2.3:a:f5:big-ip_application_security_manager:12.1.2:-:*:*:*:*:*:*
f5 big-ip_application_security_manager 12.1.2 cpe:2.3:a:f5:big-ip_application_security_manager:12.1.2:hotfix1:*:*:*:*:*:*
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_application_security_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_application_security_manager 13.0.0 cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 11.6.2 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:11.6.2:-:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 12.1.2 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.2:-:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 12.1.2 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 13.0.0 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:13.0.0:-:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 13.0.0 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_ddos_hybrid_defender 13.0.0 cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_domain_name_system >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
f5 big-ip_domain_name_system >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
f5 big-ip_domain_name_system 11.6.2 cpe:2.3:a:f5:big-ip_domain_name_system:11.6.2:-:*:*:*:*:*:*
f5 big-ip_domain_name_system 12.1.2 cpe:2.3:a:f5:big-ip_domain_name_system:12.1.2:-:*:*:*:*:*:*
f5 big-ip_domain_name_system 12.1.2 cpe:2.3:a:f5:big-ip_domain_name_system:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_domain_name_system 13.0.0 cpe:2.3:a:f5:big-ip_domain_name_system:13.0.0:-:*:*:*:*:*:*
f5 big-ip_domain_name_system 13.0.0 cpe:2.3:a:f5:big-ip_domain_name_system:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_domain_name_system 13.0.0 cpe:2.3:a:f5:big-ip_domain_name_system:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_fraud_protection_service >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
f5 big-ip_fraud_protection_service >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 11.6.2 cpe:2.3:a:f5:big-ip_fraud_protection_service:11.6.2:-:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 12.1.2 cpe:2.3:a:f5:big-ip_fraud_protection_service:12.1.2:-:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 12.1.2 cpe:2.3:a:f5:big-ip_fraud_protection_service:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 13.0.0 cpe:2.3:a:f5:big-ip_fraud_protection_service:13.0.0:-:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 13.0.0 cpe:2.3:a:f5:big-ip_fraud_protection_service:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_fraud_protection_service 13.0.0 cpe:2.3:a:f5:big-ip_fraud_protection_service:13.0.0:hotfix2:*:*:*:*:*:*
f5 big-ip_global_traffic_manager >= 11.6.1, < 11.6.2 cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip_global_traffic_manager >= 12.1.0, < 12.1.2 cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 11.6.2 cpe:2.3:a:f5:big-ip_global_traffic_manager:11.6.2:-:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 12.1.2 cpe:2.3:a:f5:big-ip_global_traffic_manager:12.1.2:-:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 12.1.2 cpe:2.3:a:f5:big-ip_global_traffic_manager:12.1.2:hotfix1:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 13.0.0 cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:-:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 13.0.0 cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:hotfix1:*:*:*:*:*:*
f5 big-ip_global_traffic_manager 13.0.0 cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:hotfix2:*:*:*:*:*:*

References for CVE-2020-5929

cvelogic Threat Intelligence