How severe is CVE-2021-46822?

CVE-2021-46822 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-2021-46822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46822?

CVE-2021-46822 affects Libjpeg-turbo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46822?

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

When was CVE-2021-46822 published?

CVE-2021-46822 was published on 2022-06-18 and last updated on 2026-06-17.

CVE-2021-46822

CVE-2021-46822 is a medium-severity vulnerability in Libjpeg-turbo 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Libjpeg-turbo
Published: 2022-06-18
Last modified: 2026-06-17

Description

The PPM reader in libjpeg-turbo through 2.0.90 mishandles use of tjLoadImage for loading a 16-bit binary PPM file into a grayscale buffer and loading a 16-bit binary PGM file into an RGB buffer. This is related to a heap-based buffer overflow in the get_word_rgb_row function in rdppm.c.

Frequently asked questions

What is CVE-2021-46822?: The PPM reader in libjpeg-turbo through 2.0.90 mishandles use of tjLoadImage for loading a 16-bit binary PPM file into a grayscale buffer and loading a 16-bit binary PGM file into an RGB buffer. This is related to a heap-based buffer overflow in the get_word_rgb_row function in rdppm.c.
How severe is CVE-2021-46822?: CVE-2021-46822 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-2021-46822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46822?: CVE-2021-46822 affects Libjpeg-turbo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46822?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46822 published?: CVE-2021-46822 was published on 2022-06-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libjpeg-turbo:libjpeg-turbo:*:*:*:*:*:*:*:*

More vulnerabilities in Libjpeg-turbo

CVE-2020-17541 — High (CVSS 8.8): Libjpeg-turbo all version have a stack-based buffer overflow in the "transform" component. A remote attacker can send a…
CVE-2018-20330 — High (CVSS 8.8): The tjLoadImage function in libjpeg-turbo 2.0.1 has an integer overflow with a resultant heap-based buffer overflow via…
CVE-2016-3616 — High (CVSS 8.8): The cjpeg utility in libjpeg allows remote attackers to cause a denial of service (NULL pointer dereference and…
CVE-2020-13790 — High (CVSS 8.1): libjpeg-turbo 2.0.4, and mozjpeg 4.0.0, has a heap-based buffer over-read in get_rgb_row() in rdppm.c via a malformed…
CVE-2021-29390 — High (CVSS 7.1): libjpeg-turbo version 2.0.90 has a heap-based buffer over-read (2 bytes) in decompress_smooth_data in jdcoefct.c.
CVE-2023-2804 — Medium (CVSS 6.5): A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of…

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