CVE-2019-17151Network attack vector

External redirection via unvalidated profile names

Published Jan 7, 2020 · Updated Aug 5, 2024

Unsafe redirection in Tencent WeChat before 7.0.9 allows remote attackers to redirect users to an external resource from a chat session. The profile parser accepts a user's name without adequate validation and treats the resulting value as an external-resource destination. The target must share a chat session with the attacker; code execution requires chaining this flaw with another vulnerability.

CVSS severity4.3
Medium
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe redirection in Tencent WeChat before 7.0.9 allows remote attackers to redirect users to an external resource from a chat session. The profile parser accepts a user's name without adequate validation and treats the resulting value as an external-resource destination. The target must share a chat session with the attacker; code execution requires chaining this flaw with another vulnerability.

The record

CVE
CVE-2019-17151
Published
Jan 7, 2020
Updated
Aug 5, 2024
Vendor
Tencent
Product
WeChat
Classifications
CWE-356
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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=Prior to 7.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tencent · WeChatversion=Prior to 7.0.9

Published CVSS scores

4.3Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-356Product UI does not Warn User of Unsafe Actions

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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