How severe is CVE-2026-34127?

CVE-2026-34127 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-34127 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34127?

CVE-2026-34127 affects Tp-link Tl-sg108pe Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34127?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34127 have an EU (EUVD) identifier?

Yes. CVE-2026-34127 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33420.

When was CVE-2026-34127 published?

CVE-2026-34127 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2026-34127

CVE-2026-34127 is a medium-severity vulnerability in Tp-link Tl-sg108pe Firmware with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v4: 5.3
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33420
Weakness: CWE-79
Affected product: Tp-link Tl-sg108pe Firmware
Published: 2026-05-29
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability has been identified in the web management interface of TP-Link's TL-SG108PE v5 switch due to improper sanitation of the SYSNAM configuration parameter during configuration file import. An attacker with administrator access can inject malicious script into the device configuration, which may be stored and executed in the administrator’s browser when the affected interface is viewed. Successful exploitation may allow session cookie theft, unauthorized configuration changes, or access to sensitive information exposed through the management interface.

Frequently asked questions

What is CVE-2026-34127?: A stored cross-site scripting (XSS) vulnerability has been identified in the web management interface of TP-Link's TL-SG108PE v5 switch due to improper sanitation of the SYSNAM configuration parameter during configuration file import. An attacker with administrator access can inject malicious script into the device configuration, which may be stored and executed in the administrator’s browser when the affected interface is viewed. Successful exploitation may allow session cookie theft, unauthorized configuration changes, or access to sensitive information exposed through the management interface.
How severe is CVE-2026-34127?: CVE-2026-34127 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-34127 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34127?: CVE-2026-34127 affects Tp-link Tl-sg108pe Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34127?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34127 have an EU (EUVD) identifier?: Yes. CVE-2026-34127 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33420.
When was CVE-2026-34127 published?: CVE-2026-34127 was published on 2026-05-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:tl-sg108pe_firmware:1.0.1:*:*:*:*:*:*:*

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