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Vulnerability details: VCID-vfqu-z1s4-mfa2
Vulnerability ID VCID-vfqu-z1s4-mfa2
Aliases CVE-2026-43620
Summary rsync: rsync: Remote Denial of Service via Out-of-bounds Read
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-43620.json
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2026-43620
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2026-43620
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2026-43620
cvssv3.1 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
cvssv4 6.9 https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
ssvc Track https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
cvssv3.1 6.5 https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
cvssv4 6.9 https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
ssvc Track https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
cvssv3.1 6.5 https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
cvssv4 6.9 https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
ssvc Track https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-43620.json
https://api.first.org/data/v1/epss?cve=CVE-2026-43620
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-43620
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2469057 https://bugzilla.redhat.com/show_bug.cgi?id=2469057
GHSA-28pw-r563-rxvm https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
rsync-out-of-bounds-array-read-via-recv-files https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
USN-8283-1 https://usn.ubuntu.com/8283-1/
USN-8349-1 https://usn.ubuntu.com/8349-1/
v3.4.3 https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-43620.json
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
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
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-20T14:11:42Z/ Found at https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
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
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-20T14:11:42Z/ Found at https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
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
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-20T14:11:42Z/ Found at https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-files
Exploit Prediction Scoring System (EPSS)
Percentile 0.0422
EPSS Score 0.00017
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:28:26.699431+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-43620.json 38.6.0