How severe is CVE-2021-46421?

CVE-2021-46421 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-46421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46421?

CVE-2021-46421 affects Franklinfueling Ts-550 Evo Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46421?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-46421 published?

CVE-2021-46421 was published on 2022-04-27 and last updated on 2026-06-17.

CVE-2021-46421

CVE-2021-46421 is a high-severity vulnerability in Franklinfueling Ts-550 Evo Firmware with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Franklinfueling Ts-550 Evo Firmware
Published: 2022-04-27
Last modified: 2026-06-17

Description

Franklin Fueling Systems FFS T5 Series 1.8.7.7299 is affected by an unauthenticated directory traversal vulnerability, which allows an attacker to obtain sensitive information.

Frequently asked questions

What is CVE-2021-46421?: Franklin Fueling Systems FFS T5 Series 1.8.7.7299 is affected by an unauthenticated directory traversal vulnerability, which allows an attacker to obtain sensitive information.
How severe is CVE-2021-46421?: CVE-2021-46421 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-46421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46421?: CVE-2021-46421 affects Franklinfueling Ts-550 Evo Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-46421 published?: CVE-2021-46421 was published on 2022-04-27 and last updated on 2026-06-17.

References

https://drive.google.com/file/d/17y764rRfgab2EhYMEqCIYh__5sOTigqe/view?usp=sharing

Affected products (1)

cpe:2.3:o:franklinfueling:ts-550_evo_firmware:1.8.7.7299:*:*:*:*:*:*:*

More vulnerabilities in Franklinfueling Ts-550 Evo Firmware

CVE-2013-7248 — Critical (CVSS 10.0): Franklin Fueling Systems TS-550 evo with firmware 2.0.0.6833 and other versions before 2.4.0 has a hardcoded password…
CVE-2017-6565 — High (CVSS 8.8): On Franklin Fueling Systems TS-550 evo 2.3.0.7332 devices, the roleDiag user, which can be obtained by exploiting…
CVE-2023-5846 — High (CVSS 8.3): Franklin Fueling System TS-550 versions prior to 1.9.23.8960 are vulnerable to attackers decoding admin credentials,…
CVE-2021-46420 — High (CVSS 7.5): Franklin Fueling Systems FFS TS-550 evo 2.23.4.8936 is affected by an unauthenticated directory traversal…
CVE-2017-6564 — Medium (CVSS 6.5): On Franklin Fueling Systems TS-550 evo 2.3.0.7332 devices, the Guest user, which contains the lowest privileges, can…
CVE-2013-7247 — Medium (CVSS 5.0): cgi-bin/tsaws.cgi in Franklin Fueling Systems TS-550 evo with firmware 2.0.0.6833 and other versions before 2.4.0…

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