CVE-2021-26295 (GCVE-0-2021-26295)

Vulnerability from cvelistv5 – Published: 2021-03-22 12:00 – Updated: 2025-02-13 16:27
VLAI Shadowserver Previdian
Title
RCE vulnerability in latest Apache OFBiz due to Java serialisation using RMI
Summary
Apache OFBiz has unsafe deserialization prior to 17.12.06. An unauthenticated attacker can use this vulnerability to successfully take over Apache OFBiz.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Java serialisation
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1258 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache OFBiz Affected: Apache OFBiz 17.12.01 to 17.12.05
guessed Create a notification for this product.
Credits
Apache OFBiz would like to thank the first report from "r00t4dm at Cloud-Penetrating Arrow Lab and Longofo at Knownsec 404 Team" and the second report by MagicZero from SGLAB of Legendsec at Qi'anxin Group.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: cfbbc90b-9586-47a0-9979-2cb167e3f044

Vulnerability ID: CVE-2021-26295

Status: Confirmed

Status Updated: 2026-11-09 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2026-11-09
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Apache / OFBiz | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-11-09: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Apache
30D Avg 2
90D Avg 2
Product OFBiz
Cisa Kev no
Connections 2
Observation Date 2026-11-09
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 05:54 UTC | Updated: 2026-11-11 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 18807362-0bee-4880-b7fd-a7f6fff4307f

Vulnerability ID: CVE-2021-26295

Status: Confirmed

Status Updated: 2025-04-28 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-04-28
Asserted: 2025-04-28
Scope
Notes: KEVIntel entry: RCE vulnerability in latest Apache OFBiz due to Java serialisation using RMI | Affected: Apache Software Foundation / Apache OFBiz | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title RCE vulnerability in latest Apache OFBiz due to Java serialisation using RMI
Vendor Apache Software Foundation
Product Apache OFBiz
Added Date 2025-04-28T00:00:00.000Z
Cvss Score 9.8
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
Show details on NVD website
To clipboard 

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          "discovery": "UNKNOWN"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "Upgrade to at least 17.12.06 or apply the patch at https://github.com/apache/ofbiz-framework/commit/af9ed4e/"
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2021-26295",
    "datePublished": "2021-03-22T12:00:18.000Z",
    "dateReserved": "2021-01-28T00:00:00.000Z",
    "dateUpdated": "2025-02-13T16:27:51.958Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-26295",
      "date": "2026-11-10",
      "epss": "0.97822",
      "percentile": "0.99906"
    },
    "nvd": {
      "cve": {
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        "cveTags": [],
        "descriptions": [
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            "lang": "en",
            "value": "Apache OFBiz has unsafe deserialization prior to 17.12.06. An unauthenticated attacker can use this vulnerability to successfully take over Apache OFBiz."
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            "value": "Apache OFBiz, presenta una deserializaci\u00f3n no segura versiones anteriores a 17.12.06.\u0026#xa0;Un atacante no autenticado puede usar esta vulnerabilidad para apoderarse con \u00e9xito de Apache OFBiz"
          }
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        "id": "CVE-2021-26295",
        "lastModified": "2024-11-21T05:56:02.423",
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    },
    "redhat_vex": {
      "current_release_date": "2025-05-29T05:02:29+00:00",
      "cve": "CVE-2021-26295",
      "id": "CVE-2021-26295",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "RCE vulnerability in latest Apache OFBiz due to Java serialisation using RMI",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26295.json",
      "version": "3"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
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Vulnerability timeline

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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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