Cisco Secure Workload is an enterprise security product; critical input-validation flaws can enable widespread RCE/privilege bypass and disrupt infrastructure.
CVE-2026-20318
Cisco Secure Workload hardening release fixes multiple critical input-validation (CWE-20) flaws.
Is CVE-2026-20318 being exploited?
Not confirmed. CVE-2026-20318 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-20318?
CVE-2026-20318 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-20318?
Yes. A fix has been recorded for CVE-2026-20318. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-20318 affect?
CVE-2026-20318 affects Cisco Secure Workload (versions prior to hardening release). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-20318?
Install Cisco's hardening update immediately; validate and monitor systems.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Improper input validation may allow attackers to bypass protections, cause DoS, escalate privileges, or achieve remote code execution.
Immediate action required
- affected2.2.1.41
- affected3.2.1.18
- affected3.3.2.50
- affected3.4.1.28
- affected3.4.1.34
- affected2.3.1.45
- affected2.3.1.41
- affected3.3.2.28
- affected3.1.1.59
- affected2.0.2.20
- affected2.1.1.33
- affected2.1.1.29
- affected3.2.1.28
- affected3.4.1.35
- affected3.1.1.65
- affected3.1.1.67
- affected2.0.1.34
- affected2.3.1.49
- affected2.2.1.39
- affected3.4.1.19
- affected3.3.2.23
- affected3.1.1.61
- affected3.1.1.54
- affected3.5.1.17
- affected3.3.2.33
- affected3.5.1.1
- affected2.3.1.53
- affected3.5.1.20
- affected3.5.1.30
- affected3.3.2.16
- affected3.1.1.55
- affected3.4.1.6
- affected2.3.1.50
- affected2.3.1.52
- affected3.2.1.19
- affected2.2.1.35
- affected3.1.1.53
- affected3.1.1.70
- affected3.2.1.20
- affected3.5.1.2
- affected1.103.1.12
- affected2.3.1.51
- affected3.3.2.42
- affected3.4.1.1
- affected3.3.2.12
- affected2.1.1.31
- affected3.5.1.23
- affected3.3.2.53
- affected3.4.1.14
- affected3.3.2.2
- affected3.4.1.20
- affected3.3.2.35
- affected2.2.1.34
- affected1.102.21
- affected3.3.2.5
- affected3.5.1.31
- affected3.6.1.5
- affected3.2.1.31
- affected3.5.1.37
- affected3.4.1.40
- affected3.6.1.17
- affected3.6.1.21
- affected3.2.1.32
- affected3.2.1.33
- affected3.6.1.35
- affected3.6.1.36
- affected3.7.1.5
- affected3.6.1.47
- affected3.7.1.22
- affected3.6.1.52
- affected3.7.1.39
- affected3.8.1.1
- affected3.7.1.51
- affected3.8.1.19
- affected3.8.1.36
- affected3.7.1.59
- affected3.8.1.39
- affected3.9.1.1
- affected3.9.1.10
- affected3.9.1.24
- affected3.9.1.25
- affected3.9.1.28
- affected3.9.1.38
- affected3.8.1.53
- affected3.9.1.52
- affected3.10.1.1
- affected3.9.1.64
- affected3.10.2.11
- affected3.9.1.66
- affected3.10.3.19
- affected3.9.1.69
- affected3.10.4.8
- affected3.10.5.6
- affected4.0.1.1
- affected4.0.2.4
- affected4.0.2.5
- affected3.10.6.3
- affected3.10.7.4
- affected4.0.3.13
- affected4.0.3.17
- affected3.10.8.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.