7.5

CVE-2022-26071: f5 big-ip Use of Insufficiently Random Values

Modified
Published 05-05-2022Last modified 17-09-2024

Vulnerability summary

CVE-2022-26071 is a high (CVSS 7.5) Use of Insufficiently Random Values vulnerability in f5 big-ip. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.07%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 05-05-2022
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, a flaw in the way reply ICMP packets are limited in the Traffic Management Microkernel (TMM) allows an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.07%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 1.06% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

F512 products
  • big-ipEOL≥ 12.1.0, < 12.2.0 | ≥ 11.6.0, < 11.7.0 | ≥ 16.1.x, < 16.1.2.2 | ≥ 15.1.x, < 15.1.5.1 | ≥ 14.1.x, < 14.1.4.6 | ≥ 13.1.x, < 13.1.5
  • big-ip_access_policy_manager11.6.1 | 11.6.2 | 11.6.3 | 11.6.4 | 11.6.5 | 12.1.0 | 12.1.1 | 12.1.2 | 12.1.3 | 12.1.4 | 12.1.5 | 12.1.6 | 13.1.0 | 13.1.1 | 13.1.3 | 13.1.4 | 13.1.5 | 14.1.0 | 14.1.2 | 14.1.3 | 14.1.4 | 15.1.0 | 15.1.1 | 15.1.2 | 15.1.3 | 15.1.4 | 15.1.5 | 16.1.0 | 16.1.1 | 16.1.2 | 17.0.0
  • big-ip_advanced_firewall_manager11.6.1 | 11.6.2 | 11.6.3 | 11.6.4 | 11.6.5 | 12.1.0 | 12.1.1 | 12.1.2 | 12.1.3 | 12.1.4 | 12.1.5 | 12.1.6 | 13.1.0 | 13.1.1 | 13.1.3 | 13.1.4 | 13.1.5 | 14.1.0 | 14.1.2 | 14.1.3 | 14.1.4 | 15.1.0 | 15.1.1 | 15.1.2 | 15.1.3 | 15.1.4 | 15.1.5 | 16.1.0 | 16.1.1 | 16.1.2 | 17.0.0
  • big-ip_analytics11.6.1 | 11.6.2 | 11.6.3 | 11.6.4 | 11.6.5 | 12.1.0 | 12.1.1 | 12.1.2 | 12.1.3 | 12.1.4 | 12.1.5 | 12.1.6 | 13.1.0 | 13.1.1 | 13.1.3 | 13.1.4 | 13.1.5 | 14.1.0 | 14.1.2 | 14.1.3 | 14.1.4 | 15.1.0 | 15.1.1 | 15.1.2 | 15.1.3 | 15.1.4 | 15.1.5 | 16.1.0 | 16.1.1 | 16.1.2 | 17.0.0
  • big-ip_application_acceleration_manager11.6.1 | 11.6.2 | 11.6.3 | 11.6.4 | 11.6.5 | 12.1.0 | 12.1.1 | 12.1.2 | 12.1.3 | 12.1.4 | 12.1.5 | 12.1.6 | 13.1.0 | 13.1.1 | 13.1.3 | 13.1.4 | 13.1.5 | 14.1.0 | 14.1.2 | 14.1.3 | 14.1.4 | 15.1.0 | 15.1.1 | 15.1.2 | 15.1.3 | 15.1.4 | 15.1.5 | 16.1.0 | 16.1.1 | 16.1.2 | 17.0.0

1 vendor · 12 products

References

1 links