CVE-2024-52508Network attack vector

Account detail exposure via public-suffix autoconfiguration fallback

Published Nov 15, 2024 · Updated Nov 15, 2024

Information exposure in affected Nextcloud Mail releases allows remote attackers to capture mail account details during autoconfiguration. The IspDb fallback removes the leftmost domain label and queries autoconfig hosts even after the candidate becomes a public suffix. Exploitation requires user-initiated setup for a domain without working autoconfiguration and attacker control of the resulting registrable autoconfig domain.

CVSS severity8.2
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in affected Nextcloud Mail releases allows remote attackers to capture mail account details during autoconfiguration. The IspDb fallback removes the leftmost domain label and queries autoconfig hosts even after the candidate becomes a public suffix. Exploitation requires user-initiated setup for a domain without working autoconfiguration and attacker control of the resulting registrable autoconfig domain.

The record

CVE
CVE-2024-52508
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-200, T1583.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.15.0, < 1.15.4
  2. Affected versionversion=>= 1.9.0, < 1.14.6
  3. Affected versionversion=>= 2.1.0, < 2.2.11
  4. Affected versionversion=>= 3.1.0, < 3.6.3
  5. Affected versionversion=>= 3.7.0, < 3.7.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=>= 1.15.0, < 1.15.4; version=>= 1.9.0, < 1.14.6; version=>= 2.1.0, < 2.2.11; version=>= 3.1.0, < 3.6.3; version=>= 3.7.0, < 3.7.7
Nextcloud GmbH · Nextcloud Mailversion=1.15.0 <15.4.0; version=1.9.0 <1.14.6; version=2.1.0 <2.2.11; version=3.1.0 <3.6.3; version=3.7.0 <3.7.7

Published CVSS scores

8.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.2NextcloudCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L

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 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-200Exposure of Sensitive Information to an Unauthorized Actor
T1583.001Acquire Infrastructure: Domains

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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