CVE-2020-9995Network attack vector

Open redirect or XSS via malformed URLs

Published Apr 2, 2021 · Updated Aug 4, 2024

URL parsing flaws in Profile Manager in Apple macOS Server before 5.11 allow remote attackers to trigger an open redirect or XSS. The Profile Manager URL parser processes maliciously crafted URLs without adequate input validation; Apple has not disclosed the specific parsing operation or parameter involved. Exploitation is network-reachable and unauthenticated but requires a user to process the crafted URL, enabling redirection or script execution in the affected web context.

CVSS severity6.1
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

URL parsing flaws in Profile Manager in Apple macOS Server before 5.11 allow remote attackers to trigger an open redirect or XSS. The Profile Manager URL parser processes maliciously crafted URLs without adequate input validation; Apple has not disclosed the specific parsing operation or parameter involved. Exploitation is network-reachable and unauthenticated but requires a user to process the crafted URL, enabling redirection or script execution in the affected web context.

The record

CVE
CVE-2020-9995
Published
Apr 2, 2021
Updated
Aug 4, 2024
Vendor
Apple
Product
macOS
Classifications
CWE-79, CWE-601, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=unspecified <5.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=unspecified <5.11

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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