CVE-2026-84732 (GCVE-0-2026-84732)

Vulnerability from cvelistv5 – Published: 2026-09-07 08:16 – Updated: 2026-09-08 15:01
VLAI
Summary
Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:01 UTC
CWE
  • CWE-190 - Integer overflow or wraparound
Assigner
References
Impacted products
Vendor Product Version CPE status
OpenVPN OpenVPN Affected: 0 , ≤ 2.6.22 (semver)
Affected: 0 , ≤ 2.7.6 (semver)
guessed Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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