How severe is CVE-2021-30499?

CVE-2021-30499 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30499?

CVE-2021-30499 primarily affects Libcaca Project Libcaca. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30499?

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-2021-30499 published?

CVE-2021-30499 was published on 2021-05-27 and last updated on 2026-06-17.

CVE-2021-30499

CVE-2021-30499 is a high-severity vulnerability in Libcaca Project Libcaca with a CVSS 3.x base score of 7.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libcaca Project Libcaca
Published: 2021-05-27
Last modified: 2026-06-17

Description

A flaw was found in libcaca. A buffer overflow of export.c in function export_troff might lead to memory corruption and other potential consequences.

Frequently asked questions

What is CVE-2021-30499?: A flaw was found in libcaca. A buffer overflow of export.c in function export_troff might lead to memory corruption and other potential consequences.
How severe is CVE-2021-30499?: CVE-2021-30499 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30499?: CVE-2021-30499 primarily affects Libcaca Project Libcaca. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30499?: 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-2021-30499 published?: CVE-2021-30499 was published on 2021-05-27 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:libcaca_project:libcaca:-:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

More vulnerabilities in Libcaca Project Libcaca

CVE-2018-20549 — High (CVSS 8.8): There is an illegal WRITE memory access at caca/file.c (function caca_file_read) in libcaca 0.99.beta19.
CVE-2018-20548 — High (CVSS 8.8): There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 1bpp data.
CVE-2018-20545 — High (CVSS 8.8): There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 4bpp data.
CVE-2018-20547 — High (CVSS 8.1): There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for 24bpp…
CVE-2018-20546 — High (CVSS 8.1): There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for the…
CVE-2021-30498 — High (CVSS 7.8): A flaw was found in libcaca. A heap buffer overflow in export.c in function export_tga might lead to memory corruption…

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