CVE-2019-18988Known exploitationPublic exploit

Local credential disclosure via shared AES key

Published Feb 7, 2020 · Updated Oct 21, 2025

Weak credential storage in TeamViewer Desktop through 14.7.1965 allows local users to decrypt protected Windows registry values. The client encrypts OptionsPasswordAES and related stored secrets with the same AES-128-CBC key and initialization vector across installations. Existing local access is usually required, while exposed configuration backups can be decrypted elsewhere; legacy static session passwords are affected only when the non-default unattended-access setting is enabled.

CVSS severity7.0
High
EPSS probability4.71%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak credential storage in TeamViewer Desktop through 14.7.1965 allows local users to decrypt protected Windows registry values. The client encrypts OptionsPasswordAES and related stored secrets with the same AES-128-CBC key and initialization vector across installations. Existing local access is usually required, while exposed configuration backups can be decrypted elsewhere; legacy static session passwords are affected only when the non-default unattended-access setting is enabled.

The record

CVE
CVE-2019-18988
Published
Feb 7, 2020
Updated
Oct 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, T1555
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.0NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4NVDAV:L/AC:M/Au:N/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-521Weak Password Requirements
T1555Unsecured Credentials: Credentials from Password Stores

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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