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Vulnerability details: VCID-amxh-2y3v-xqbf
Vulnerability ID VCID-amxh-2y3v-xqbf
Aliases CVE-2021-44759
Summary Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.
Status Published
Exploitability 0.5
Weighted Severity 7.3
Risk 3.6
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
epss 0.00287 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2021-44759
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-44759
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2021-44759
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-44759
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37147
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37148
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37149
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38161
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44040
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44759
https://lists.apache.org/thread/zblwzcfs9ryhwjr89wz4osw55pxm6dx6
https://www.debian.org/security/2022/dsa-5153
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
CVE-2021-44759 https://nvd.nist.gov/vuln/detail/CVE-2021-44759
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-44759
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-44759
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.51875
EPSS Score 0.00287
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T12:22:12.005423+00:00 EPSS Importer Import https://epss.cyentia.com/epss_scores-current.csv.gz 37.0.0