CVE-2026-81680Hinoki check available

Recovery-path removal via unauthenticated slot deletion

Published Aug 27, 2026 · Updated Aug 27, 2026

Improper integrity validation in OpenSSL Encrypt before 1.4.9 allows attackers to remove recovery slots from envelope files. The password-decryption path verifies the DEK-keyed slot-set MAC only when slot fields remain, so deleting those header fields treats the file as slotless. The attacker needs write access to an encrypted file; normal password decryption still succeeds, but the owner's configured recovery paths are silently lost.

CVSS severity9.3
Critical
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper integrity validation in OpenSSL Encrypt before 1.4.9 allows attackers to remove recovery slots from envelope files. The password-decryption path verifies the DEK-keyed slot-set MAC only when slot fields remain, so deleting those header fields treats the file as slotless. The attacker needs write access to an encrypted file; normal password decryption still succeeds, but the owner's configured recovery paths are silently lost.

The record

CVE
CVE-2026-81680
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
jahlives
Product
OpenSSL Encrypt
Classifications
CWE-347, CWE-354, T1565.001
Attack vector
local
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 vectorlocal
Required privilegesunauthenticated

What is affected?

jahlives · OpenSSL Encryptversion=0 <1.4.9

Published CVSS scores

4.0VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
CWE-354Improper Validation of Integrity Check Value
T1565.001Stored Data Manipulation

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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