Threats / SysAid / CVE-2025-2776
CVE-2025-2776
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-09-19
SysAid On-Prem vulnerability
SysAid On-Prem contains an XML external entity (XXE) vulnerability in Server URL processing that enables administrator account takeover and unauthorized file access.
Verdict
Today item — known-exploited.
An unauthenticated attacker can exploit XXE injection in the Server URL parameter to read arbitrary files from the affected system and assume control of administrator accounts, with active exploitation confirmed in the wild.
CISA KEV Yes · 2025-07-225EPSS 0.64397 (verify live)6Exploit Weaponized · public PoC7CVSS 9.33CISA SSVC Exploitation: active · Automatable: yes · Impact: partial4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
236 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22).
Probability (EPSS)
EPSS 0.64397 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L) · Affected: SysAid, SysAid On-Prem. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-611 XML External Entity (XXE) — weakness family: Web / client.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: partialCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 76 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious XML payload embedding an external entity reference in the Server URL field to trigger XXE processing.
Business
The organization's SysAid deployment becomes a vector for data exfiltration and privilege escalation without detection.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I read sensitive configuration files and credentials from the server filesystem through XXE file inclusion techniques.
Business
Confidential system data, API keys, and database credentials are exposed to unauthorized parties.
3
Lateral reach — past segmentation narrative 3
Attacker
I leverage the XXE vulnerability to modify or inject administrator account credentials through entity manipulation.
Business
Attackers gain persistent administrative access to the SysAid platform and underlying infrastructure.
4
Data at risk — exfiltration narrative 4
Attacker
I use administrator privileges to deploy malware, exfiltrate data, or pivot to connected systems.
Business
The organization faces operational disruption, data breach liability, and potential ransomware deployment.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Found an error? Propose a correction.
A correction is a cited counter-claim — it must cite a source,
gets reviewed by a second human, and is never auto-applied. See the
correction convention and our identity
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