How severe is CVE-2018-5727?

CVE-2018-5727 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-2018-5727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5727?

CVE-2018-5727 affects Uclouvain Openjpeg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5727?

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

When was CVE-2018-5727 published?

CVE-2018-5727 was published on 2018-01-16 and last updated on 2026-06-17.

CVE-2018-5727

CVE-2018-5727 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Uclouvain Openjpeg
Published: 2018-01-16
Last modified: 2026-06-17

Description

In OpenJPEG 2.3.0, there is an integer overflow vulnerability in the opj_t1_encode_cblks function (openjp2/t1.c). Remote attackers could leverage this vulnerability to cause a denial of service via a crafted bmp file.

Frequently asked questions

What is CVE-2018-5727?: In OpenJPEG 2.3.0, there is an integer overflow vulnerability in the opj_t1_encode_cblks function (openjp2/t1.c). Remote attackers could leverage this vulnerability to cause a denial of service via a crafted bmp file.
How severe is CVE-2018-5727?: CVE-2018-5727 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-2018-5727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5727?: CVE-2018-5727 affects Uclouvain Openjpeg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5727 published?: CVE-2018-5727 was published on 2018-01-16 and last updated on 2026-06-17.

References

https://github.com/uclouvain/openjpeg/issues/1053

Affected products (1)

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

More vulnerabilities in Uclouvain Openjpeg

CVE-2013-4290 — Critical (CVSS 10.0): Stack-based buffer overflow in OpenJPEG before 1.5.2 allows remote attackers to have unspecified impact via unknown…
CVE-2013-4289 — Critical (CVSS 10.0): Multiple integer overflows in lib/openjp3d/jp3d.c in OpenJPEG before 1.5.2 allow remote attackers to have unspecified…
CVE-2012-3358 — Critical (CVSS 10.0): Multiple heap-based buffer overflows in the j2k_read_sot function in j2k.c in OpenJPEG 1.5 allow remote attackers to…
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…

All CVEs affecting Uclouvain Openjpeg →

Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
CVE-2026-24814 — Critical (CVSS 10.0): Integer Overflow or Wraparound vulnerability in swoole swoole-src (thirdparty/hiredis modules). This vulnerability is…
CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →