CVE-2026-35559Network attack vector

Driver crash via out-of-bounds query-data write

Published Apr 3, 2026 · Updated Apr 3, 2026

Out-of-bounds write in Amazon Athena ODBC driver before 2.1.0.0 allows remote attackers to crash the driver via crafted query data. The query-processing components perform an out-of-bounds write while consuming specially crafted data; Amazon narrows the input to table metadata but does not identify the affected function or buffer operation. The driver must process the attacker-controlled data during a user-initiated query, and the documented consequence is interruption of the driver process rather than data disclosure or modification.

CVSS severity7.1
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Amazon Athena ODBC driver before 2.1.0.0 allows remote attackers to crash the driver via crafted query data. The query-processing components perform an out-of-bounds write while consuming specially crafted data; Amazon narrows the input to table metadata but does not identify the affected function or buffer operation. The driver must process the attacker-controlled data during a user-initiated query, and the documented consequence is interruption of the driver process rather than data disclosure or modification.

The record

CVE
CVE-2026-35559
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5AmazonCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1AmazonCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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