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Fencer Vulns
critical 10.0

CVE-2020-14500 json

IMPROPER NEUTRALIZATION OF NULL BYTE OR NUL CHARACTER CWE-158

published 2020-08-25 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6636

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.

Patch / fix

  • Secomea GateManager all versions prior to 9.2c Secomea GateManager all versions prior to 9.2c 9.2c

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-210-01 updated cvss 10.0

Secomea GateManager

  • Secomea GateManager < 9.2c
    affected: mitigation “Secomea has released a new version to mitigate the reported vulnerabilities. The most up-to-date release at the time of this CISA advisory can be found on the Secomea website.” kb.secomea.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.67% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Secomea GateManager all versions prior to 9.2c Secomea GateManager all versions prior to 9.2c

Classification

Weakness
  • CWE-158 Improper Neutralization of Null Byte or NUL Character
  • CWE-476 NULL Pointer Dereference

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.