Known vulnerabilities in Apache Log4j 2.8.1

Software: Apache Log4j
Version: 2.8.1
Software CPE: cpe:2.3:a:apache_foundation:log4j:*:*:*:*:*:*:*:*
Total vulnerabilities: 8
Public exploits: 2
Known exploited (KEV): 2
Highest CVSSv4 Score: 9.3

Vulnerabilities by Severity

Severity distribution of vulnerabilities affecting Apache Log4j version 2.8.1 Apache Log4j 2.8.1 is affected by 8 vulnerabilities: 1 critical, 2 high, 5 medium Critical High Medium Low

Vulnerabilities (8)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU128402 - Improper Encoding or Escaping of Output
CVE-2026-34480
CWE-116 Medium
No
No
2.25.4 28.04.2026 SB20260428217
SB20260513128
SB2026052632
and 17 more
#VU128401 - Improper Encoding or Escaping of Output
CVE-2026-34479
CWE-116 Medium
No
No
2.25.4 28.04.2026 SB20260428217
SB20260513128
SB2026052632
and 15 more
#VU120231 - Improper Validation of Certificate with Host Mismatch
CVE-2025-68161
CWE-297 Medium
No
No
2.25.3 22.12.2025 SB2025122245
SB2026012084
SB2026012087
and 99 more
#VU59098 - Improper Control of Generation of Code ('Code Injection')
CVE-2021-44832
CWE-94 Medium
No
No
2.17.1 28.12.2021 SB2021122816
SB2021123002
SB2022010601
and 197 more
#VU59051 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2021-45105
CWE-835 Medium
Public exploit available
No
2.17.0 18.12.2021 SB2021121802
SB2021121903
SB2021122011
and 169 more
#VU58976 - Improper Control of Generation of Code ('Code Injection')
CVE-2021-45046
CWE-94 High
Public exploit available
Exploited
2.16.0 15.12.2021 SB2021121504
SB2021121511
SB2021121512
and 178 more
#VU58816 - Improper Control of Generation of Code ('Code Injection')
CVE-2021-44228
CWE-94 Critical
Public exploit available
Exploited
2.15.0 10.12.2021 SB2021121003
SB2021121101
SB2021121201
and 338 more
#VU12127 - Deserialization of Untrusted Data
CVE-2017-5645
CWE-502 High
No
No
- 24.04.2018 SB2017040201
SB2019011707
SB2017090512
and 40 more