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01 Record

CVE-2026-27790

Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a restart by sending specific requests, resulting in a temporary denial of service. Version

LowPUBLISHEDCNA: Gallagher
CNA base score2.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

02 Description

Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a restart by sending specific requests, resulting in a temporary denial of service. Version

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
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.2% of scored records. A rank, not a probability.
NVD base score
2.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-25.
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
2026-07-07 03:49Z3 MO AGO
Last updated
2026-07-07 13:37Z3 MO AGO
Reserved
2026-03-01
Assigning CNA
Gallagher
Record state
PUBLISHED
Severity
Low (CVSS 2.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Weaknesses
Data version
5.2
Document digest
8afbd48b30a89ee604602f7f23b01e8739165bc3f5b4f08644341677d4d4b5ee

05 Affected products

VendorProductVersionsPlatforms
GallagherT-20 Readers0 to 9.10, 9.50 to < vCR9.50.260616a, 9.40 to < vCR9.40.260616a, 9.30 to < vCR9.30.260616a, 9.20 to < vCR9.20.260616a—

06 References