CVE-2017-12149
Exploitation confirmed. First attested on 2021-12-10 by CISA-ADP, CISA KEV, GCVE · enisa-cnw-kev, GCVE · kevintel, GCVE · shadowserver.
- Published2017-10-04
- WeaknessCWE-502
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
In Jboss Application Server as shipped with Red Hat Enterprise Application Platform 5.2, it was found that the doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker does not restrict classes for which it performs deserialization and thus allowing an attacker to execute arbitrary code via crafted serialized data.
Timeline
dates in UTC- 2017-10-0421:01CVE publishedNVD
- 2021-12-10Listed as exploited by GCVEGCVE
- 2021-12-10Exploitation first reportedCISA KEV
- 2021-12-10Added to the CISA KEV catalogCISA KEV
- 2026-08-1303:55SSVC exploitation set to activeCISA-ADP
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-12149?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-12149?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 |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| 5.0 | = 5.0.0 | no fix published | NVD |
| 5.0 | = 5.0.1 | no fix published | NVD |
| 5.1 | = 5.1.0 | no fix published | NVD |
| 5.1 | = 5.1.1 | no fix published | NVD |
| 5.1 | = 5.1.2 | no fix published | NVD |
| 5.2 | = 5.2.0 | no fix published | NVD |
| 5.2 | = 5.2.1 | no fix published | NVD |
| 5.2 | = 5.2.2 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- CISA’s required action: Apply updates per vendor instructions.due 2022-06-10
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 11 repositories, unverifiedsevck/CVE-2017-12149yunxu1/jboss-_CVE-2017-121491337g/CVE-2017-12149jreppiks/CVE-2017-12149Xcatolin/jboss-deserialization PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2021-12-10
- Patch Due Date
- 2022-06-10
- Ransomware Use
- Known
- Required Action
- Apply updates per vendor instructions.
Sources
- CISA KEVKEV entry2021-12-10
- GCVEexploitation2021-12-10
- CISA-ADPSSVC decisionactive2026-08-13
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.19.82025-02-07
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- CISA-ADPweakness (CWE)CWE-5022025-02-07
- NVDweakness (CWE)CWE-502read 2026-10-23
- FIRST EPSSEPSS score90.7 %read 2026-10-23
- PoC-in-GitHubproof of concept11read 2026-10-23
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
- 2017-10-04
- Last Modified
- 2026-10-07
- NVD status
- Analyzed
Frequently asked questions
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