How severe is CVE-2020-27509?

CVE-2020-27509 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-27509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27509?

CVE-2020-27509 affects Galaxkey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27509?

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

When was CVE-2020-27509 published?

CVE-2020-27509 was published on 2022-06-26 and last updated on 2026-07-05.

CVE-2020-27509

CVE-2020-27509 is a medium-severity vulnerability in Galaxkey with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Galaxkey
Published: 2022-06-26
Last modified: 2026-07-05

Description

Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the 'subject' field. The payload executes when the recipient logs into their mailbox.

Frequently asked questions

What is CVE-2020-27509?: Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the 'subject' field. The payload executes when the recipient logs into their mailbox.
How severe is CVE-2020-27509?: CVE-2020-27509 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-27509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27509?: CVE-2020-27509 affects Galaxkey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27509 published?: CVE-2020-27509 was published on 2022-06-26 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:galaxkey:galaxkey:*:*:*:*:*:*:*:*

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