CVE-2026-0517

Unauthenticated server crash via crafted packet

Published Jan 17, 2026 · Updated Jan 17, 2026

Denial of service in Absolute Secure Access Server before 14.20 allows remote attackers on an adjacent network to crash the server. Absolute has not disclosed which packet type or server parser mishandles the crafted input, or the incorrect operation that exhausts resources. Exploitation is unauthenticated but requires network adjacency and additional environmental conditions; the documented effect is a server crash only.

CVSS severity6.0
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Absolute Secure Access Server before 14.20 allows remote attackers on an adjacent network to crash the server. Absolute has not disclosed which packet type or server parser mishandles the crafted input, or the incorrect operation that exhausts resources. Exploitation is unauthenticated but requires network adjacency and additional environmental conditions; the documented effect is a server crash only.

The record

CVE
CVE-2026-0517
Published
Jan 17, 2026
Updated
Jan 17, 2026
Vendor
Absolute Security
Product
Absolute Secure Access
Classifications
CWE-400, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <14.20

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Absolute Security · Absolute Secure Accessversion=0 <14.20

Published CVSS scores

6.0Absolute SecurityCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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