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Fencer Vulns
medium 6.5

CVE-2025-68383 json

Filebeat Improper Validation of Specified Index, Position, or Offset in Input

published 2025-12-18 10 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-204418 , GHSA-2mj3-6grc-px38 , GO-2025-4252

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

Improper Validation of Specified Index, Position, or Offset in Input (CWE-1285) in Filebeat Syslog parser and the Libbeat Dissect processor can allow a user to trigger a Buffer Overflow (CAPEC-100) and cause a denial of service (panic/crash) of the Filebeat process via either a malformed Syslog message or a malicious tokenizer pattern in the Dissect configuration.

Patch / fix

  • go github.com/elastic/beats/v7 7.0.0-alpha2.0.20251204214633-dd3af18220bf, 8.19.9, 9.1.9, 9.2.3
  • elastic filebeat 8.19.9, 9.1.9, 9.2.3
  • elasticsearch filebeat 8.19.9, 9.1.9, 9.2.3
  • elastic beats 7.0.0-alpha2.0.20251204214633-dd3af18220bf
  • elasticsearch beats 7.0.0-alpha2.0.20251204214633-dd3af18220bf
  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260123T022811-150000.1.140.1

suse advisories SUSE-SU-2026:0292-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
10 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/elastic/beats/v7
>=7.7.0, <8.19.9
>=9.0.0, <9.1.9
>=9.2.0, <9.2.3
<7.0.0-alpha2.0.20251204214633-dd3af18220bf
>=7.7.0
8.19.9
9.1.9
9.2.3
7.0.0-alpha2.0.20251204214633-dd3af18220bf
go github.com/elastic/beats
<=7.6.2
all versions
 no fix listed

Affected products

  • Elastic Filebeat

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.