CVE-2022-22922Public exploitNetwork attack vector

Administrative access via predictable HTTP session IDs

Published Feb 18, 2022 · Updated Aug 3, 2024

Insufficient session randomness in TP-Link TL-WA850RE V6 before v6_200923 allows remote attackers to gain administrative access. The HTTPd session generator increments IDs sequentially and restarts its sequence after reboot, enabling enumeration of values near a known ID. Exploitation requires network access to the management interface and an active administrator session, whose privileges become available through the predicted ID.

CVSS severity9.8
Critical
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session randomness in TP-Link TL-WA850RE V6 before v6_200923 allows remote attackers to gain administrative access. The HTTPd session generator increments IDs sequentially and restarts its sequence after reboot, enabling enumeration of values near a known ID. Exploitation requires network access to the management interface and an active administrator session, whose privileges become available through the predicted ID.

The record

CVE
CVE-2022-22922
Published
Feb 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-330, CAPEC-59, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CAPEC-59Session Credential Falsification through Prediction
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

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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