CVE-2024-49400Network attack vector

Unauthorized command execution via unanchored regex matching

Published Oct 17, 2024 · Updated Nov 1, 2024

Authorization bypass in Meta Tacquito before 07b49d1358e6 allows remote attackers to execute unauthorized commands via TACACS+ requests. The stringy command authorizer passed configured expressions directly to Go regexp.MatchString, which accepted matches anywhere within requested arguments instead of requiring whole-string matches. Exposure requires a server using Tacquito for command authorization with an allowed pattern that occurs as a substring of a disallowed command request.

CVSS severity7.6
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Meta Tacquito before 07b49d1358e6 allows remote attackers to execute unauthorized commands via TACACS+ requests. The stringy command authorizer passed configured expressions directly to Go regexp.MatchString, which accepted matches anywhere within requested arguments instead of requiring whole-string matches. Exposure requires a server using Tacquito for command authorization with an allowed pattern that occurs as a substring of a disallowed command request.

The record

CVE
CVE-2024-49400
Published
Oct 17, 2024
Updated
Nov 1, 2024
Vendor
Meta Platforms, Inc.
Product
Tacquito
Classifications
CWE-1333, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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?

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  1. Affected versionversion=0 <07b49d1358e6ec0b5aa482fcd284f509191119e2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meta Platforms, Inc. · Tacquitoversion=0 <07b49d1358e6ec0b5aa482fcd284f509191119e2
Meta · Tacquitoversion=0 <07b49d1358e6ec0b5aa482fcd284f509191119e2

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H

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-1333Inefficient Regular Expression Complexity
T1210Exploitation of Remote Services

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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