# What is CVE-2020-9547?

> CVE-2020-9547 is a critical-severity flaw (CVSS 9.8) in Jackson-Databind from Fasterxml, published on 2 March 2020. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 18%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2020-9547

## At a glance

- **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.
- **Precursor Intelligence risk score:** 54 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Critical (CVSS 9.8 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 18% (latest exploit-likelihood forecast)
- **Published:** 2 March 2020
- **Record last updated:** 7 November 2023
- **Main product:** Jackson-Databind from Fasterxml
- **Affected products:** 16

## What is CVE-2020-9547? In plain terms

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### The official description

FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig (aka ibatis-sqlmap).

### What kind of flaw is it?

- CWE-502: Deserialization of Untrusted Data

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data, change data and take it offline

Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Is CVE-2020-9547 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 18%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 18%, 18%, 18%, 18%, 18%, 18%, 18%.

### Timeline

- 2 March 2020: Published
- 7 November 2023: Record last updated
- 11 July 2025: Exploit likelihood jumped
- 16 June 2026: Exploit likelihood fell

### How Precursor Intelligence ranks it

CVE-2020-9547 scores **54 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2020-9547?

The published record lists 16 products. Versions are as published: "2.0.0 to before 2.7.9.7" means from 2.0.0 up to, but not including, 2.7.9.7.

- [Jackson-Databind](https://www.precursorintelligence.com/product/fasterxml/jackson-databind) by [Fasterxml](https://www.precursorintelligence.com/vendors/fasterxml) (Application): 2.0.0 to before 2.7.9.7, 2.8.0 to before 2.8.11.6, 2.9.0 to before 2.9.10.4
- [Primavera Unifier](https://www.precursorintelligence.com/product/oracle/primavera_unifier) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.1, 16.2, 17.7 to 17.12, 18.8, 19.12
- [Retail Xstore Point of Service](https://www.precursorintelligence.com/product/oracle/retail_xstore_point_of_service) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 15.0, 16.0, 17.0, 18.0, 19.0
- [Active Iq Unified Manager](https://www.precursorintelligence.com/product/netapp/active_iq_unified_manager) by [Netapp](https://www.precursorintelligence.com/vendors/netapp) (Application): 7.3 and later, 9.5 and later
- [Communications Network Charging and Control](https://www.precursorintelligence.com/product/oracle/communications_network_charging_and_control) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.0.1, 12.0.0 to 12.0.3
- [Enterprise Manager Base Platform](https://www.precursorintelligence.com/product/oracle/enterprise_manager_base_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.3.0.0, 13.4.0.0
- [Weblogic Server](https://www.precursorintelligence.com/product/oracle/weblogic_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Autovue for Agile Product Lifecycle Management](https://www.precursorintelligence.com/product/oracle/autovue_for_agile_product_lifecycle_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 21.0.2
- [Banking Platform](https://www.precursorintelligence.com/product/oracle/banking_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 2.4.0 to 2.9.0
- [Communications Contacts Server](https://www.precursorintelligence.com/product/oracle/communications_contacts_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0.4.0
- [Communications Evolved Communications Application Server](https://www.precursorintelligence.com/product/oracle/communications_evolved_communications_application_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.1
- [Communications Instant Messaging Server](https://www.precursorintelligence.com/product/oracle/communications_instant_messaging_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 10.0.1.4.0
- [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 8.0
- [Global Lifecycle Management Opatch](https://www.precursorintelligence.com/product/oracle/global_lifecycle_management_opatch) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 12.2.0.1.20
- [Jd Edwards Enterpriseone Orchestrator](https://www.precursorintelligence.com/product/oracle/jd_edwards_enterpriseone_orchestrator) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 9.2.4.2
- [Jd Edwards Enterpriseone Tools](https://www.precursorintelligence.com/product/oracle/jd_edwards_enterpriseone_tools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 9.2.4.2

## How do I fix CVE-2020-9547?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [github.com](https://github.com/FasterXML/jackson-databind/issues/2634) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujan2021.html) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuoct2020.html) (Patch, Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuoct2021.html) (Patch, Third-party advisory)
- [lists.apache.org](https://lists.apache.org/thread.html/r35d30db00440ef63b791c4b7f7acb036e14d4a23afa2a249cb66c0fd%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r4accb2e0de9679174efd3d113a059bab71ff3ec53e882790d21c1cc1%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r742ef70d126548dcf7de5be5779355c9d76a9aec71d7a9ef02c6398a%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r893a0104e50c1c2559eb9a5812add28ae8c3e5f43712947a9847ec18%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r9464a40d25c3ba1a55622db72f113eb494a889656962d098c70c5bb1%40%3Cdev.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/r98c9b6e4c9e17792e2cd1ec3e4aa20b61a791939046d3f10888176bb%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/ra3e90712f2d59f8cef03fa796f5adf163d32b81fe7b95385f21790e6%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rb6fecb5e96a6d61e175ff49f33f2713798dd05cf03067c169d195596%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rc0d5d0f72da1ed6fc5e438b1ddb3fa090c73006b55f873cf845375ab%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rd0e958d6d5c5ee16efed73314cd0e445c8dbb4bdcc80fc9d1d6c11fc%40%3Cdev.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rd5a4457be4623038c3989294429bc063eec433a2e55995d81591e2ca%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rdd49ab9565bec436a896bc00c4b9fc9dce1598e106c318524fbdfec6%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rdd4df698d5d8e635144d2994922bf0842e933809eae259521f3b5097%40%3Cissues.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/redbe4f1e21bf080f637cf9fbec47729750a2f443a919765360337428%40%3Cnotifications.zookeeper.apache.org%3E)
- [lists.apache.org](https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2020/03/msg00008.html) (Mailing list, Third-party advisory)
- [medium.com](https://medium.com/%40cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062)
- [security.netapp.com](https://security.netapp.com/advisory/ntap-20200904-0006/) (Third-party advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujul2020.html) (Third-party advisory)

## Questions

### What is CVE-2020-9547?

CVE-2020-9547 is a critical-severity flaw in Jackson-Databind from Fasterxml, published on 2 March 2020. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### How serious is CVE-2020-9547?

It scores 9.8 out of 10 on the CVSS severity scale, which is critical. Our risk score for CVE-2020-9547 is 54 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.

### Is CVE-2020-9547 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 18%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2020-9547 affect?

For Jackson-Databind from Fasterxml: 2.0.0 to before 2.7.9.7, 2.8.0 to before 2.8.11.6, 2.9.0 to before 2.9.10.4. The record lists 16 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2020-9547?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2020-9547 affect you?

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