CVE-2024-27569: LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the init_nvr

Routine

MEDIUM 6.5MITIGATE

CVE-2024-27569 is a medium-severity flaw (CVSS 6.5) affecting lbt-t300-t390 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the init_nvram function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-121
Published	2024-03-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: libtor

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-03-01 14:15 UTCPublished CVE record published
2026-06-17 07:20 UTCUpdated Record last modified

libtor lbt-t300-t390 firmware MITIGATE

Affected: 2.2.1.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.1.8

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-2024-27569?

lbt-t300-t390 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-27569 being exploited?

CVE-2024-27569 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-2024-27569 affect?

CVE-2024-27569 affects lbt-t300-t390 firmware. Severity is medium (CVSS 6.5). LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the init_nvram function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

How urgent is CVE-2024-27569?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2024-27572 HIGH 7.5 MITIGATE LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the updateCu
CVE-2024-27571 HIGH 7.5 MITIGATE LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the makeCurR
CVE-2024-27570 HIGH 7.5 MITIGATE LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the ApCliSsid parameter in the generate
CVE-2024-27568 MEDIUM 6.5 MITIGATE LBT T300-T390 v2.2.1.8 were discovered to contain a stack overflow via the apn_name_3g parameter in the setupE
CVE-2024-27567 MEDIUM 6.5 MITIGATE LBT T300- T390 v2.2.1.8 were discovered to contain a stack overflow via the vpn_client_ip parameter in the con

References

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