Is CVE-2021-43257 in the CISA KEV catalog?

No. CVE-2021-43257 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43257?

CVE-2021-43257 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-43257?

CVE-2021-43257 has an EPSS score of 0.92% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43257?

Upgrade mantisbt to 2.25.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-43257

HIGH

7.8

CVSS v3

NVD

Description

Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain access to information when a user opens the csv_export.php generated CSV file in Excel.

CWE-1236

How to fix

Remediation Available

mantisbtNVD

Affected:< 2.25.3Fixed in:2.25.3CVE-2021-43257derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.92%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-1236 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-33256	High	8.8	79%	-	-
CVE-2018-11652	Critical	9.8	25%	-	Fix
CVE-2020-36962	Critical	9.8	11%	-	-
CVE-2019-12765	Critical	9.8	10%	-	-
CVE-2019-14749	High	8.8	9.6%	-	Fix
CVE-2020-9372	High	7.8	8.6%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.