CVE-2023-2523
Exploitation reported by one source. First attested on 2026-05-13 by GCVE · shadowserver.
- Published2023-05-04
- WeaknessCWE-434
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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 contacted early about this disclosure but did not respond in any way.
Timeline
dates in UTC- 2023-05-0418:15CVE publishedNVD
- 2026-05-1313:12Listed as exploited by GCVEGCVE
- 2026-05-1313:12Exploitation first reportedGCVE
Observed activity
isMalicious corpus · updated 2026-11-03 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-2523?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-2523?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.5 | = 9.5 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
No fix published by the sources we read yet. NVD record
Detection
read 2026-11-02 22:42 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 2 repositories, unverifiedAny3ite/CVE-2023-2523werwolfz/cve-2023-2523-and-cve-2023-2648 PoC-in-GitHub
- Metasploit modules
- none listed Metasploit Framework
Sources
- GCVEexploitation2026-05-13
- CNACVSS 3.17.3known since 2026-10-23
- NVDCVSS 3.19.8read 2026-10-23
- CNACVSS 2.07.5known since 2026-10-23
- CNAweakness (CWE)CWE-434known since 2026-10-23
- NVDweakness (CWE)CWE-434read 2026-10-23
- FIRST EPSSEPSS score32.9 %read 2026-11-02
- PoC-in-GitHubproof of concept2read 2026-11-02
Identifiers
- EUVD-2023-34003same flawENISA EUVD · LicenseRef-ENISA-legal-notice
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2023-05-04
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-2523?
Is CVE-2023-2523 actively exploited?
What is the CVSS score for CVE-2023-2523?
Running Weaver E-Office? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.
Sources for this record
- CVE Program · CVE Program Terms of Use
- ENISA EU Vulnerability Database · ENISA legal notice §1.2 (reproduction authorised, provided the source is acknowledged)
- FIRST EPSS · EPSS terms of use (free use, attribution requested)
- GCVE · GCVE dump terms (preserve source attribution)
- NVD · Public domain (17 U.S.C. § 105) for NVD-authored data; third-party content under its own terms
- PoC-in-GitHub · CC0-1.0