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01 Record

CVE-2026-76497

Cisco Expressway Series Software Hardening Release: October 2026 - Insecure Temporary File Vulnerabilities

MediumPUBLISHEDCNA: cisco
CNA base score6.6 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
View raw JSON

02 Description

Cisco Expressway Series Software Hardening Release: October 2026 - Insecure Temporary File Vulnerabilities

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.15% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 4.7% of scored records. A rank, not a probability.
NVD base score
6.6 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-22.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-21 16:18Z7 DAYS AGO
Last updated
2026-10-22 13:37Z7 DAYS AGO
Reserved
2026-08-19
Assigning CNA
cisco
Record state
PUBLISHED
Severity
Medium (CVSS 6.6)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weaknesses
  • CWE-377Insecure Temporary FileClass
Data version
5.2
Document digest
d359e1e1c8a07e06877e15bd75425691a90c6bc9c282a0d4f4b8a141825a8fb2

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco TelePresence Video Communication Server (VCS) ExpresswayX8.11.2, X8.6, X8.11.3, X8.2.2, X8.8.3, X8.11.0, X12.5.2, X8.1.1, X8.9, X12.5.1, X12.5.6, X8.7.3, X12.6.0, X8.11.1, X8.5, X8.9.1, X8.10.2, X8.8.2, X8.5.3, X8.1, X8.9.2, X8.11.4, X12.5.4, X8.8.1, X8.2.1, X8.5.1, X8.6.1, X8.1.2, X8.8, X8.10.0, X12.5.3, X8.10.1, X12.5.7, X8.10.3, X8.7.1, X8.2, X12.5.8, X8.7, X8.5.2, X12.5.9, X12.5.0, X8.10.4, X8.7.2, X12.5.5, X12.6.1, X12.6.2, X12.6.3, X12.6.4, X12.7.0, X12.7.1, X14.0.0, X14.0.1, X14.0.2, X14.0.3, X14.0.4, X14.0.5, X14.0.6, X14.0.7, X14.0.8, X14.2.0, X14.0.9, X14.2.1, X14.2.2, X14.0.11, X14.2.5, X14.0.10, X14.2.6, X14.2.7, X14.3.0, X14.3.1, X14.3.2, X14.3.3, X15.0.0, X14.3.4, X14.3.5, X15.0.1, X15.0.2, X15.0.3, X14.3.6, X15.2.0, X15.2.1, X15.2.2, X15.2.3, X14.3.7, X15.2.4., X15.2.4, X15.3.0, X15.3.1, X15.3.2, X15.4.0, X15.5.0, X15.5.1, X15.5.2, X15.5.3—

06 References