CVE-2025-2776: SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability

Q: How do I fix CVE-2025-2776?

sysaid: upgrade to newer than 23.3.40. Exact commands for each OS are on this page.

Q: Is CVE-2025-2776 being exploited?

Yes. CVE-2025-2776 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2025-2776 affect?

CVE-2025-2776 affects sysaid. Severity is critical (CVSS 9.3). SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the Server URL processing functionality, allowing for administrator account takeover and file read primitives.

Q: How urgent is CVE-2025-2776?

Priority 92/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action

Patch now

CRITICAL 9.3EXPLOITEDREMOTEUPGRADE

CVE-2025-2776 is a critical-severity flaw (CVSS 9.3) affecting sysaid, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	64.7% (top 1%)
CISA exploited list	Yes, fix due 2025-08-12
Weakness	CWE-611
Published	2025-05-07
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: sysaid

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-07 15:15 UTCPublished CVE record published
2025-07-22Exploited Added to the CISA Known Exploited Vulnerabilities list
2025-08-12Deadline CISA due date for US federal agencies to patch
2026-06-17 09:07 UTCUpdated Record last modified

sysaid sysaid UPGRADE

Affected: <= 23.3.40

Fixed in: newer than 23.3.40

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sysaid || rpm -q sysaid || sysaid --version

2. UPGRADE to newer than 23.3.40 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sysaid

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sysaid

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · fips-provider-next · FIXED · 1.5.3-3.eln159 · FEDORA-2026-3ce99ec7df · source

sudo dnf upgrade --advisory=FEDORA-2026-3ce99ec7df

Fedora 46 · rubygem-webmock · FIXED · 3.26.1-3.fc46 · FEDORA-2026-bb57b4d095 · source

sudo dnf upgrade --advisory=FEDORA-2026-bb57b4d095

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: mrk336/From-EternalBlue-to-CVE-2025-2776-The-Evolution-of-an-SMB-Attack (0 stars)
Write-up: labs.watchtowr.com/sysowned-your-friendly-rce-support-ticket/
Nuclei scan template: SysAid On-Prem <= 23.3.40 - XML External Entity

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-2776?

sysaid: upgrade to newer than 23.3.40. Exact commands for each OS are on this page.

Is CVE-2025-2776 being exploited?

Yes. CVE-2025-2776 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2025-2776 affect?

CVE-2025-2776 affects sysaid. Severity is critical (CVSS 9.3). SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the Server URL processing functionality, allowing for administrator account takeover and file read primitives.

How urgent is CVE-2025-2776?

Priority 92/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-2777 CRITICAL 9.3 UPGRADE SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerabilit
CVE-2025-2775 CRITICAL 9.3 EXPLOITED UPGRADE SysAid On-Prem Improper Restriction of XML External Entity Reference Vulnerability

References

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