CVE-2022-28705 — 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, and 13.1.x versions prior to 13.1.5, on platforms with an ePVA and the pva.fwdaccel BigDB variable enabled, undisclosed requests to a virtual server with a FastL4 profile that has ePVA acceleration enabled can cause the Traffic Management Microkernel (TMM) process to terminate

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HIGH

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, and 13.1.x versions prior to 13.1.5, on platforms with an ePVA and the pva.fwdaccel BigDB variable enabled, undisclosed requests to a virtual server with a FastL4 profile that has ePVA acceleration enabled can cause the Traffic Management Microkernel (TMM) process to terminate

Published May 5, 2022

7.5

HIGH

CVSS 3.1

EPSS 0.93%

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, and 13.1.x versions prior to 13.1.5, on platforms with an ePVA and the pva.fwdaccel BigDB variable enabled, undisclosed requests to a virtual server with a FastL4 profile that has ePVA acceleration enabled can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

Vendor F5 Product Big-IP Default
n/a
- Version
  13.1.x
  Status
  affected
  Constraints
  <13.1.5
- Version
  14.1.x
  Status
  affected
  Constraints
  <14.1.4.6
- Version
  15.1.x
  Status
  affected
  Constraints
  <15.1.5.1
- Version
  16.1.x
  Status
  affected
  Constraints
  <16.1.2.2
- Version
  11.6.x
  Status
  unaffected
  Constraints
  -
- Version
  12.1.x
  Status
  unaffected
  Constraints
  -
- Version
  17.0.0
  Status
  unaffected
  Constraints
  <17.0.x*

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Big-IP

n/a

Version	Status	Constraints
13.1.x	affected	<13.1.5
14.1.x	affected	<14.1.4.6
15.1.x	affected	<15.1.5.1
16.1.x	affected	<16.1.2.2
11.6.x	unaffected	-
12.1.x	unaffected	-
17.0.0	unaffected	<17.0.x*

Remediation

No remediation recorded yet.

Metrics

0.93% 0.00930

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.00930

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	0.93% (0.00930)	59.25th	v5 (v2026.06.15)
Jun 15, 2026	0.85% (0.00850)	53.20th	v5 (v2026.06.15)
Mar 17, 2025	0.41% (0.00414)	59.51th	v4 (v2025.03.14)
Dec 12, 2024	0.09% (0.00091)	40.48th	v3 (v2023.03.01)
May 15, 2024	0.09% (0.00089)	37.92th	v3 (v2023.03.01)
Oct 16, 2023	0.09% (0.00086)	35.88th	v3 (v2023.03.01)
May 12, 2023	0.08% (0.00078)	31.99th	v3 (v2023.03.01)
Apr 5, 2023	0.06% (0.00055)	20.75th	v3 (v2023.03.01)
Mar 7, 2023	0.05% (0.00046)	13.98th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Oct 22, 2022	0.89% (0.00885)	26.71th	v2 (v2022.01.01)
May 6, 2022	0.89% (0.00885)	24.66th	v2 (v2022.01.01)

Weaknesses (1)

CWE-190

Integer Overflow

References (1)

https://support.f5.com/csp/article/K52340447
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://support.f5.com/csp/article/K52340447		x_refsource_MISCVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner f5

Published May 5, 2022

Updated Sep 16, 2024

Reserved Apr 19, 2022

Link CVE-2022-28705

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2022-28705

Red Hat

Severity n/a

Public date n/a

Links CVE-2022-28705