Which products and versions are affected by CVE-2025-2777?

Affected: Sysaid; SysAid On-Prem. The full list is in the CVE brief.

Is CVE-2025-2777 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 14, 2025.

Is CVE-2025-2777 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2025-2777?

Public exploit code is available.

Is there a fix for CVE-2025-2777?

Fixed versions are available, including Sysaid <=23.3.40, Sysaid 23.3.40.

How urgently should CVE-2025-2777 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2025-2777

Q: What is CVE-2025-2777?

SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the lshw processing functionality, allowing for administrator account takeover and file read primitives.

Q: How urgently should CVE-2025-2777 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CriticalExploitedPublic exploit

SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the lshw processing functionality, allowing for administrator account takeover and file read primitives.

Published May 7, 2025 · Updated Feb 26, 2026

Key Facts

Patch immediately

CVE-2025-2777 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Sysaid, SysAid On-Prem.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 14, 2025. Public exploit code is available.
EPSS estimates a 73% probability of exploitation in the next 30 days.
Fixed versions are available, including Sysaid <=23.3.40, Sysaid 23.3.40.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

73%

Higher than 99.4% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2025-2777 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	May 14, 2025	n/a	Not reported
CIRCL KEV	May 14, 2025	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
SysaidSysaid	See advisory	23.3.40
SysAid On-Prem	See advisory	n/a

Patched Releases

Sysaid

<=23.3.40

Timeline

Publicly disclosed
May 7, 2025
Added to Industry KEV feed
May 14, 2025
Added to CIRCL KEV
May 14, 2025
Last updated
Feb 26, 2026

Weakness Type

CWE-611 Improper Restriction of XML External Entity Reference

References

7 more references in the full CVE brief

FAQ

Common Questions.

SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the lshw processing functionality, allowing for administrator account takeover and file read primitives.
Affected: Sysaid; SysAid On-Prem. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 14, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Sysaid <=23.3.40, Sysaid 23.3.40.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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