CVE-2023-2766: A vulnerability was found in Weaver OA 9.5 and classified as problematic

This week

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2023-2766 is a medium-severity flaw (CVSS 5.3) affecting e-office. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Weaver OA 9.5 and classified as problematic. This issue affects some unknown processing of the file /building/backmgr/urlpage/mobileurl/configfile/jx2_config.ini. The manipulation leads to files or directories accessible. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-229271. NOTE: The vendor was contacted early

Why this priority

EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	54.2% (top 1%)
CISA exploited list	No
Weakness	CWE-552
Published	2023-05-17
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: weaver

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

Am I affected?

Timeline

2023-05-17 17:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

weaver e-office DOWNGRADE

Affected: 9.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.5

1. Check installed version

apt-cache policy e-office || rpm -q e-office || e-office --version

2. No fixed release: DOWNGRADE to a release before 9.5 (Debian / Ubuntu)

apt-cache madison e-office sudo apt install e-office=<VERSION_BEFORE_9.5> sudo apt-mark hold e-office

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list e-office sudo dnf downgrade e-office-<VERSION_BEFORE_9.5> sudo dnf versionlock add e-office

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

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

Nuclei scan template: Weaver OA 9.5 - Information Disclosure

Verify at the official source NVD · CVE Program · 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-2023-2766?

e-office: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2766 being exploited?

CVE-2023-2766 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-2766 affect?

CVE-2023-2766 affects e-office. Severity is medium (CVSS 5.3). A vulnerability was found in Weaver OA 9.5 and classified as problematic. This issue affects some unknown processing of the file /building/backmgr/urlpage/mobileurl/configfile/jx2_config.ini. The manipulation leads to files or directories a

How urgent is CVE-2023-2766?

Priority 53/100. EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-3227 MEDIUM 4.7 UPGRADE A vulnerability was found in Panwei eoffice OA up to 9.5
CVE-2023-34798 CRITICAL 9.8 UPGRADE An arbitrary file upload vulnerability in eoffice before v9.5 allows attackers to execute arbitrary code via u
CVE-2023-2765 MEDIUM 4.3 DOWNGRADE A vulnerability has been found in Weaver OA up to 9.5 and classified as problematic
CVE-2023-2648 MEDIUM 6.3 DOWNGRADE A vulnerability was found in Weaver E-Office 9.5
CVE-2023-2647 MEDIUM 6.3 DOWNGRADE A vulnerability was found in Weaver E-Office 9.5 and classified as critical

References

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