How severe is CVE-2019-6988?

CVE-2019-6988 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6988 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6988?

CVE-2019-6988 affects Uclouvain Openjpeg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6988?

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

When was CVE-2019-6988 published?

CVE-2019-6988 was published on 2019-01-28 and last updated on 2026-06-17.

CVE-2019-6988

CVE-2019-6988 is a medium-severity vulnerability in Uclouvain Openjpeg with a CVSS 3.x base score of 6.5. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Uclouvain Openjpeg
Published: 2019-01-28
Last modified: 2026-06-17

Description

An issue was discovered in OpenJPEG 2.3.0. It allows remote attackers to cause a denial of service (attempted excessive memory allocation) in opj_calloc in openjp2/opj_malloc.c, when called from opj_tcd_init_tile in openjp2/tcd.c, as demonstrated by the 64-bit opj_decompress.

Frequently asked questions

What is CVE-2019-6988?: An issue was discovered in OpenJPEG 2.3.0. It allows remote attackers to cause a denial of service (attempted excessive memory allocation) in opj_calloc in openjp2/opj_malloc.c, when called from opj_tcd_init_tile in openjp2/tcd.c, as demonstrated by the 64-bit opj_decompress.
How severe is CVE-2019-6988?: CVE-2019-6988 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6988 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6988?: CVE-2019-6988 affects Uclouvain Openjpeg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6988?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6988 published?: CVE-2019-6988 was published on 2019-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:uclouvain:openjpeg:2.3.0:*:*:*:*:*:*:*

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CVE-2025-54874 — Critical (CVSS 9.8): OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj_jp2_read_header may…
CVE-2018-7648 — Critical (CVSS 9.8): An issue was discovered in mj2/opj_mj2_extract.c in OpenJPEG 2.3.0. The output prefix was not checked for length, which…
CVE-2017-17480 — Critical (CVSS 9.8): In OpenJPEG 2.3.0, a stack-based buffer overflow was discovered in the pgxtovolume function in jp3d/convert.c. The…

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