How severe is CVE-2021-37529?

CVE-2021-37529 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-37529 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-2021-37529?

CVE-2021-37529 primarily affects Fig2dev Project Fig2dev. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37529?

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

When was CVE-2021-37529 published?

CVE-2021-37529 was published on 2022-01-12 and last updated on 2026-06-17.

CVE-2021-37529

CVE-2021-37529 is a medium-severity vulnerability in Fig2dev Project Fig2dev with a CVSS 3.x base score of 5.5. 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-415.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-415
Affected product: Fig2dev Project Fig2dev
Published: 2022-01-12
Last modified: 2026-06-17

Description

A double-free vulnerability exists in fig2dev through 3.28a is affected by: via the free_stream function in readpics.c, which could cause a denial of service (context-dependent).

Frequently asked questions

What is CVE-2021-37529?: A double-free vulnerability exists in fig2dev through 3.28a is affected by: via the free_stream function in readpics.c, which could cause a denial of service (context-dependent).
How severe is CVE-2021-37529?: CVE-2021-37529 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-37529 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-2021-37529?: CVE-2021-37529 primarily affects Fig2dev Project Fig2dev. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37529?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37529 published?: CVE-2021-37529 was published on 2022-01-12 and last updated on 2026-06-17.

References

https://sourceforge.net/p/mcj/tickets/125/

Affected products (4)

cpe:2.3:a:fig2dev_project:fig2dev:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

More vulnerabilities in Fig2dev Project Fig2dev

CVE-2025-46397 — High (CVSS 7.8): A flaw was found in xfig. This vulnerability allows possible code execution via local input manipulation via…
CVE-2018-16140 — High (CVSS 7.8): A buffer underwrite vulnerability in get_line() (read.c) in fig2dev 3.2.7a allows an attacker to write prior to the…
CVE-2021-3561 — High (CVSS 7.1): An Out of Bounds flaw was found fig2dev version 3.2.8a. A flawed bounds check in read_objects() could allow an attacker…
CVE-2025-31164 — Medium (CVSS 6.6): heap-buffer overflow in fig2dev in version 3.2.9a allows an attacker to availability via local input manipulation…
CVE-2025-31163 — Medium (CVSS 6.6): Segmentation fault in fig2dev in version 3.2.9a allows an attacker to availability via local input manipulation…
CVE-2025-31162 — Medium (CVSS 6.6): Floating point exception in fig2dev in version 3.2.9a allows an attacker to availability via local input manipulation…

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CVE-2020-37239 — Critical (CVSS 9.8): libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety…
CVE-2026-43414 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double…
CVE-2026-43011 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix potential double free of skb When…
CVE-2026-31609 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid double-free in…

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