WebORB for Java by Midnight Coders, version 5.1.1.0, Action Message Format (AMF3) Java implementation is vulnerable to insecure deserialization
Published Jun 11, 2018
9.8
CRITICALCVSS 3.0
EPSS 8.18%
Description
The Java implementations of AMF3 deserializers in WebORB for Java by Midnight Coders, version 5.1.1.0, derive class instances from java.io.Externalizable rather than the AMF3 specification's recommendation of flash.utils.IExternalizable. A remote attacker with the ability to spoof or control an RMI server connection may be able to send serialized Java objects that execute arbitrary code when deserialized.
Affected products
-
- Version 5.1.1.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Midnight Coders | WebORB for Java | n/a |
|
- 5.1.1.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.18% (0.08180) | 94.70th | v5 (v2026.06.15) |
| Sep 22, 2026 | 8.18% (0.08180) | 94.61th | v5 (v2026.06.15) |
| Sep 21, 2026 | 7.14% (0.07140) | 94.07th | v5 (v2026.06.15) |
| Sep 6, 2026 | 8.18% (0.08180) | 94.49th | v5 (v2026.06.15) |
| Sep 5, 2026 | 7.14% (0.07140) | 93.93th | v5 (v2026.06.15) |
| Aug 30, 2026 | 8.18% (0.08180) | 94.46th | v5 (v2026.06.15) |
| Aug 28, 2026 | 7.14% (0.07140) | 93.89th | v5 (v2026.06.15) |
| Aug 24, 2026 | 8.18% (0.08180) | 94.42th | v5 (v2026.06.15) |
| Aug 23, 2026 | 7.14% (0.07140) | 93.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.21% (0.08214) | 94.14th | v5 (v2026.06.15) |
| Mar 30, 2025 | 7.78% (0.07778) | 91.14th | v4 (v2025.03.14) |
| Mar 29, 2025 | 24.47% (0.24466) | 93.72th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.92% (0.07915) | 91.42th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.60% (0.02597) | 89.98th | v3 (v2023.03.01) |
| May 21, 2024 | 3.75% (0.03750) | 91.81th | v3 (v2023.03.01) |
| Apr 20, 2024 | 3.81% (0.03810) | 91.77th | v3 (v2023.03.01) |
| Mar 26, 2024 | 3.82% (0.03816) | 91.69th | v3 (v2023.03.01) |
| Nov 2, 2023 | 4.81% (0.04814) | 91.83th | v3 (v2023.03.01) |
| Jun 5, 2023 | 3.77% (0.03770) | 90.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.45% (0.04452) | 91.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.63% (0.05634) | 90.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.63% (0.05634) | 89.29th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.63% (0.05634) | 76.84th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.42% (0.02418) | 53.87th | v1 |
| Jan 6, 2022 | 2.42% (0.02418) | 53.42th | v1 |
| Sep 1, 2021 | 2.42% (0.02418) | 78.36th | v1 |
| Apr 14, 2021 | 2.42% (0.02418) | 0.00th | v1 |
References (4)
- http://www.securityfocus.com/bid/97384 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution x_refsource_MISCThird Party Advisory
- https://codewhitesec.blogspot.com/2017/04/amf.html x_refsource_MISCExploitThird Party Advisory
- https://www.kb.cert.org/vuls/id/307983 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/97384 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution | x_refsource_MISCThird Party Advisory | |
| https://codewhitesec.blogspot.com/2017/04/amf.html | x_refsource_MISCExploitThird Party Advisory | |
| https://www.kb.cert.org/vuls/id/307983 | third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource |
Change history (0)
No recorded changes yet.