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CVE-2026-13122 (GCVE-0-2026-13122)

Vulnerability from cvelistv5 – Published: 2026-07-06 14:32 – Updated: 2026-07-06 15:51
VLAI
Summary
OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled
Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 15:51 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Openvpn OpenVPN Affected: 2.6.0 , ≤ 2.6.20 (semver)
Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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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.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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