CVE-2025-2776Known exploitationPublic exploitNetwork attack vector

Administrator takeover via unsafe Server URL XML parsing

Published May 7, 2025 · Updated Nov 19, 2025

XXE in SysAid On-Premises 23.3.40 and earlier allows remote attackers to read server files through the Server URL endpoint. The unauthenticated /mdm/serverurl handler passes the POST body to PropertyListParser.parse without disabling external entity resolution. A crafted external DTD can exfiltrate the single-line InitAccount.cmd file containing the main administrator password, enabling account takeover.

CVSS severity9.8
Critical
EPSS probability64.73%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in SysAid On-Premises 23.3.40 and earlier allows remote attackers to read server files through the Server URL endpoint. The unauthenticated /mdm/serverurl handler passes the POST body to PropertyListParser.parse without disabling external entity resolution. A crafted external DTD can exfiltrate the single-line InitAccount.cmd file containing the main administrator password, enabling account takeover.

The record

CVE
CVE-2025-2776
Published
May 7, 2025
Updated
Nov 19, 2025
Vendor
SysAid
Product
SysAid On-Premises
Classifications
CWE-611, T1190, T1555.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 2025Record 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=0 <=23.3.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SysAid · SysAid On-Premisesversion=0 <=23.3.40

Published CVSS scores

9.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20265
Sep 23, 2026Unavailable
Sep 24, 2026Unavailable
Sep 25, 20262
Sep 26, 20261
Sep 27, 20263
Sep 28, 20262
Latest reporting daySep 28, 2026
Latest daily unique IPs2
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application
T1555.001Credentials from Password Stores: Credentials from Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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