October 13, 2026

CVE Watchtower

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CVE-2023-27997NVD

Vulnerability Summary

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.
Severity Level
CRITICAL(9.8)
Published Date
Jun 13, 2023
Last Modified
Jul 31, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
85.69%Probability
Root Weakness (CWE)
CWE-122: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CWE-787: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Fortinet Fortiproxy >= 1.1.0 and <= 1.1.6
  • Fortinet Fortiproxy >= 1.2.0 and <= 1.2.13
  • Fortinet Fortiproxy >= 2.0.0 and <= 2.0.12
  • Fortinet Fortiproxy >= 7.0.0 and <= 7.0.9
  • Fortinet Fortiproxy >= 7.2.0 and <= 7.2.3
  • Fortinet Fortios >= 6.0.0 and <= 6.0.16
  • Fortinet Fortios >= 6.2.0 and <= 6.2.13
  • Fortinet Fortios >= 6.4.0 and <= 6.4.12
  • Fortinet Fortios >= 7.0.0 and <= 7.0.11
  • Fortinet Fortios >= 7.2.0 and <= 7.2.4
  • Fortinet Fortios >= 6.0.12 and <= 6.0.16
  • Fortinet Fortios >= 6.2.9 and <= 6.2.13
  • Fortinet Fortios
Patched Versions
Not provided by NVD for this CVE.
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References