CVE-2023-2523: A vulnerability was found in Weaver E-Office 9.5

This week

HIGH 7.3REMOTEDOWNGRADE

CVE-2023-2523 is a high-severity flaw (CVSS 7.3) 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 E-Office 9.5. It has been rated as critical. Affected by this issue is some unknown functionality of the file App/Ajax/ajax.php?action=mobile_upload_save. The manipulation of the argument upload_quwan leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-228014 is the identifier assigned to this vulnerability. NOTE: The vendor was co

Why this priority

High severity
EPSS top 2%: 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	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	32.9% (top 2%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-05-04
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: e-office

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

Am I affected?

Timeline

2023-05-04 18:15 UTCPublished CVE record published
2026-06-17 05:52 UTCUpdated Record last modified

e-office 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.

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-2023-2523?

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

Is CVE-2023-2523 being exploited?

CVE-2023-2523 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-2023-2523 affect?

CVE-2023-2523 affects e-office. Severity is high (CVSS 7.3). A vulnerability was found in Weaver E-Office 9.5. It has been rated as critical. Affected by this issue is some unknown functionality of the file App/Ajax/ajax.php?action=mobile_upload_save. The manipulation of the argument upload_quwan lea

How urgent is CVE-2023-2523?

Priority 60/100. High severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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-2023-2766 MEDIUM 5.3 DOWNGRADE A vulnerability was found in Weaver OA 9.5 and classified as problematic
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

References

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