CASCACascade Atlas

Evidence dossier

CVE-2023-2868

Remote Code injection in Barracuda Email Security Gateway

82.2–98.2Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives). The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product. This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.

State
PUBLISHED
Published
May 24, 2023
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS86.96%

2026-07-18 · v2026.06.15 · percentile 99.7%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

Googleoriginal assertion
container

Remote Code injection in Barracuda Email Security Gateway

CISA KEVoriginal assertion
observed_exploitation

Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.869560000000; percentile 0.997270000000

Applicability

Cited product scope

Trace impact →
BarracudaBarracuda Email Security Gateway
[{"status": "affected", "version": "5.1.3.001", "lessThan": "9.2.0.006", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:h:barracuda:email_security_gateway_300:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:barracuda:email_security_gateway_400:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:barracuda:email_security_gateway_600:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:barracuda:email_security_gateway_800:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:barracuda:email_security_gateway_900:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:barracuda:email_security_gateway_300_firmware:*:*:*:*:*:*:*:*; start including 5.1.3.001; end including 9.2.0.006supported
Unknown vendorUnknown product
cpe:2.3:o:barracuda:email_security_gateway_400_firmware:*:*:*:*:*:*:*:*; start including 5.1.3.001; end including 9.2.0.006supported
Unknown vendorUnknown product
cpe:2.3:o:barracuda:email_security_gateway_600_firmware:*:*:*:*:*:*:*:*; start including 5.1.3.001; end including 9.2.0.006supported
Unknown vendorUnknown product
cpe:2.3:o:barracuda:email_security_gateway_800_firmware:*:*:*:*:*:*:*:*; start including 5.1.3.001; end including 9.2.0.006supported
Unknown vendorUnknown product
cpe:2.3:o:barracuda:email_security_gateway_900_firmware:*:*:*:*:*:*:*:*; start including 5.1.3.001; end including 9.2.0.006supported

Assessments

CVSS by origin

9.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.4
cve-coordination@google.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
9.4
GoogleCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.