CVE-2026-1949: Delta Electronics AS320T has incorrect calculation of the buffer size on the stack in the GET/PUT request hand

Q: How do I fix CVE-2026-1949?

as320t firmware: upgrade to 1.16. Exact commands for each OS are on this page.

Q: Is CVE-2026-1949 being exploited?

CVE-2026-1949 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-1949 affect?

CVE-2026-1949 affects as320t firmware. Severity is critical (CVSS 9.8). Delta Electronics AS320T has incorrect calculation of the buffer size on the stack in the GET/PUT request handler of the web service.

Q: How urgent is CVE-2026-1949?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-1949 is a critical-severity flaw (CVSS 9.8) affecting as320t firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Delta Electronics AS320T has incorrect calculation of the buffer size on the stack in the GET/PUT request handler of the web service.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-131
Published	2026-04-24
Last modified	2026-10-26

Publisher (CNA): Deltaww · Vendor: deltaww

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-24 06:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

deltaww as320t firmware UPGRADE

Affected: < 1.16

Fixed in: 1.16

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1949?

as320t firmware: upgrade to 1.16. Exact commands for each OS are on this page.

Is CVE-2026-1949 being exploited?

CVE-2026-1949 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1949 affect?

CVE-2026-1949 affects as320t firmware. Severity is critical (CVSS 9.8). Delta Electronics AS320T has incorrect calculation of the buffer size on the stack in the GET/PUT request handler of the web service.

How urgent is CVE-2026-1949?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-1951 CRITICAL 9.8 UPGRADE Delta Electronics AS320T has no checking of the length of the buffer with the directory name vulnerability.
CVE-2026-1950 CRITICAL 9.8 UPGRADE Delta Electronics AS320T has No checking of the length of the buffer with the file name vulnerability.
CVE-2026-1952 CRITICAL 9.8 UPGRADE Delta Electronics AS320T has denial of service via the undocumented subfunction vulnerability.

References

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