CVE-2022-24974Network attack vector

Link-rewriting policy bypass via specially formatted emails

Published May 2, 2022 · Updated Aug 3, 2024

Policy bypass in Menlo Security Email Isolation On-Premise 2.81.1 through 2.81.8 allows remote attackers to deliver unrewritten links. Specially formatted email content causes the link-rewriting stage to leave links unchanged, but Menlo Security has not disclosed the parsing condition or code-level fault. Exploitation requires a crafted email to traverse the on-premise isolation service; the bounded result is a link that escapes configured rewriting policy.

CVSS severity5.3
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Policy bypass in Menlo Security Email Isolation On-Premise 2.81.1 through 2.81.8 allows remote attackers to deliver unrewritten links. Specially formatted email content causes the link-rewriting stage to leave links unchanged, but Menlo Security has not disclosed the parsing condition or code-level fault. Exploitation requires a crafted email to traverse the on-premise isolation service; the bounded result is a link that escapes configured rewriting policy.

The record

CVE
CVE-2022-24974
Published
May 2, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 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

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1566.002Spearphishing Link

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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