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Collection Degraded30 / 46 Sources HealthyPublic Intel Only
Vulnerabilities/CVE-2020-12723Public Intelligence Dossier
Source: perl · Limited verification•Last verified: •Collection Degraded
CVE-2020-12723Unknown / EvaluatingHIGH (raw)CVSS 7.5CWE-120

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Published: 05 Jun 2020•Last updated: 14 Oct 2026, 03:47 PM IST•Source identifier: cve@mitre.org
Dossier completeness: source-provided sections 2 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
7.5HIGH (raw)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metric sourcenvd@nist.gov
EPSS probability
6%0.060
Percentile93rd
Weakness type
CWE-120
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

SOC priority

High

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: Microsoft or Microsoft-managed product relevance; HIGH severity; No confirmed exploitation signal in current enrichment

Affected Products & Remediation

16 source-backed products
Affected products and versions (source)
  • perl perl · < 5.30.3 · NVD CPE · Source
  • netapp oncommand workflow automation · version range not provided by source · NVD CPE · Source
  • netapp snap creator framework · version range not provided by source · NVD CPE · Source
  • fedoraproject fedora · 31 · NVD CPE · Source
  • opensuse leap · 15.1 · NVD CPE · Source
  • oracle communications billing and revenue management · 12.0.0.2.0; 12.0.0.3.0 · NVD CPE · Source
  • oracle communications diameter signaling router · >= 8.0.0 <= 8.5.0 · NVD CPE · Source
  • oracle communications eagle application processor · >= 16.1.0 <= 16.4.0 · NVD CPE · Source
  • oracle communications eagle lnp application processor · 10.1; 10.2 · NVD CPE · Source
  • oracle communications lsms · >= 13.1 <= 13.4 · NVD CPE · Source
  • oracle communications offline mediation controller · 12.0.0.3.0 · NVD CPE · Source
  • oracle communications performance intelligence center · >= 10.3.0.0.0 <= 10.3.0.2.1; >= 10.4.0.1.0 <= 10.4.0.3.1 · NVD CPE · Source
  • oracle configuration manager · 12.1.2.0.8 · NVD CPE · Source
  • oracle enterprise manager base platform · 13.4.0.0 · NVD CPE · Source
  • oracle sd-wan edge · 8.2; 9.0; 9.1 · NVD CPE · Source
  • oracle tekelec platform distribution · >= 7.4.0 <= 7.7.1 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched network-unauthenticated (CVSS AV:N, CVSS PR:N, CVSS UI:N)

Exposure

  1. Identify devices reporting this CVE and note which expose the affected service to untrusted networks.Telemetry: DeviceTvmSoftwareVulnerabilities · A network-reachable, no-privilege vector makes internet-facing instances the first exposure question. · Rule network-unauthenticated

Exploitation evidence

  1. Review inbound connections to the affected service from unexpected sources since the advisory date.Telemetry: DeviceNetworkEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule network-unauthenticated

Response

  1. Confirm the source-stated update is installed and the CVE is no longer reported.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies remediation. · Rule network-unauthenticated

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
cve@mitre.org
Record status · verification
UPDATED · NVD API
CPE
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*, cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*, cpe:2.3:a:netapp:snap_creator_framework:-:*:*:*:*:*:*:*, cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*, cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*, cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.2.0:*:*:*:*:*:*:*, cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*, cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*, cpe:2.3:a:oracle:communications_eagle_application_processor:*:*:*:*:*:*:*:*, cpe:2.3:a:oracle:communications_eagle_lnp_application_processor:10.1:*:*:*:*:*:*:*

Evidence & Provenance

3 public sources
github.comSource recordnvd.nist.govSource recordgithub.comSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2020-12723
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2020-12723
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2020-12723"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library

Correlated briefings

— No published briefing references this CVE

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.