How severe is CVE-2020-23707?

CVE-2020-23707 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-2020-23707 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23707?

CVE-2020-23707 affects Ok-file-formats Project Ok-file-formats. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23707?

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

When was CVE-2020-23707 published?

CVE-2020-23707 was published on 2021-07-15 and last updated on 2026-06-17.

CVE-2020-23707

CVE-2020-23707 is a medium-severity vulnerability in Ok-file-formats Project Ok-file-formats 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Ok-file-formats Project Ok-file-formats
Published: 2021-07-15
Last modified: 2026-06-17

Description

A heap-based buffer overflow vulnerability in the function ok_jpg_decode_block_progressive() at ok_jpg.c:1054 of ok-file-formats through 2020-06-26 allows attackers to cause a Denial of Service (DOS) via a crafted jpeg file.

Frequently asked questions

What is CVE-2020-23707?: A heap-based buffer overflow vulnerability in the function ok_jpg_decode_block_progressive() at ok_jpg.c:1054 of ok-file-formats through 2020-06-26 allows attackers to cause a Denial of Service (DOS) via a crafted jpeg file.
How severe is CVE-2020-23707?: CVE-2020-23707 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-2020-23707 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23707?: CVE-2020-23707 affects Ok-file-formats Project Ok-file-formats. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23707?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-23707 published?: CVE-2020-23707 was published on 2021-07-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ok-file-formats_project:ok-file-formats:*:*:*:*:*:*:*:*

More vulnerabilities in Ok-file-formats Project Ok-file-formats

CVE-2021-28233 — High (CVSS 8.8): Heap-based Buffer Overflow vulnerability exists in ok-file-formats 1 via the ok_jpg_generate_huffman_table function in…
CVE-2018-20618 — High (CVSS 8.8): ok-file-formats through 2018-10-16 has a heap-based buffer over-read in the ok_mo_decode2 function in ok_mo.c.
CVE-2018-20617 — High (CVSS 8.8): ok-file-formats through 2018-10-16 has a heap-based buffer overflow in the ok_csv_decode2 function in ok_csv.c.
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CVE-2021-41413 — High (CVSS 7.8): ok-file-formats master 2021-9-12 is affected by a buffer overflow in ok_jpg_convert_data_unit_grayscale and…
CVE-2021-44343 — High (CVSS 7.8): David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow. When the function of the ok-file-formats…

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