9.8

CVE-2020-8840: debian debian_linux Deserialization of Untrusted Data

Modified
AliasesUBUNTU-CVE-2020-8840DEBIAN-CVE-2020-8840CGA-225r-8hmf-v945
Published 10-02-2020Last modified 08-10-2026

Vulnerability summary

CVE-2020-8840 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in debian debian_linux. EPSS estimates a 26.59% chance of exploitation in the next 30 days, higher than 98% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 27% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
26.59%
0%100%
High · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 1
DLA-2111-1MGASA-2021-0153RHBA-2020:1494RHBA-2020:3255RHSA-2020:1644RHSA-2020:2511

Timeline

  1. 10-02-2020
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

26.59%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

No change 0.00 pp

From 26.59% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard68 products
  • eco-java-gradle-2.10All versions (No fix recorded)
  • eco-java-gradle-2.11All versions (No fix recorded)
  • eco-java-gradle-2.12All versions (No fix recorded)
  • eco-java-gradle-2.13All versions (No fix recorded)
  • eco-java-gradle-2.14All versions (No fix recorded)
Netapp4 products
Debian2 products
Com.fasterxml.jackson.core1 product
  • jackson-databind≥ 2.0.0, < 2.6.7.4 | ≥ 2.7.0, < 2.7.9.7 | ≥ 2.8.0, < 2.8.11.5 | ≥ 2.9.0, < 2.9.10.3
Fasterxml1 product
  • jackson-databind≥ 2.0.0, < 2.7.9.7 | ≥ 2.8.0, < 2.8.11.5 | ≥ 2.9.0, < 2.9.10.3
Huawei1 product
Oracle1 product
Ubuntu1 product
  • jackson-databindAll versions (No fix recorded) | < 2.4.2-3ubuntu0.1~esm2

8 vendors · 79 products

References

92 links
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