CVE-2026-81693Network attack vectorHinoki check available

Remote denial of service via unbounded QR ranges

Published Aug 27, 2026 · Updated Aug 27, 2026

Denial of service in jahlives OpenSSL Encrypt before 1.4.9 allows remote attackers to exhaust memory through crafted QR images. The multi-QR importer reads the untrusted JSON total value and materializes a corresponding range without first enforcing a maximum. Any remote attacker able to submit a QR image to a consuming interface can force out-of-memory termination and interrupt that process.

CVSS severity8.7
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in jahlives OpenSSL Encrypt before 1.4.9 allows remote attackers to exhaust memory through crafted QR images. The multi-QR importer reads the untrusted JSON total value and materializes a corresponding range without first enforcing a maximum. Any remote attacker able to submit a QR image to a consuming interface can force out-of-memory termination and interrupt that process.

The record

CVE
CVE-2026-81693
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
jahlives
Product
OpenSSL Encrypt
Classifications
CWE-789, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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 <1.4.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jahlives · OpenSSL Encryptversion=0 <1.4.9

Published CVSS scores

7.5VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-789Uncontrolled Memory Allocation
T1499.004Application or System Exploitation

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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