How severe is CVE-2021-40774?

CVE-2021-40774 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-2021-40774 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40774?

CVE-2021-40774 affects Adobe Prelude. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40774?

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

When was CVE-2021-40774 published?

CVE-2021-40774 was published on 2021-11-22 and last updated on 2026-06-17.

CVE-2021-40774

CVE-2021-40774 is a medium-severity vulnerability in Adobe Prelude 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Adobe Prelude
Published: 2021-11-22
Last modified: 2026-06-17

Description

Adobe Prelude version 10.1 (and earlier) is affected by a null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Frequently asked questions

What is CVE-2021-40774?: Adobe Prelude version 10.1 (and earlier) is affected by a null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
How severe is CVE-2021-40774?: CVE-2021-40774 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-2021-40774 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40774?: CVE-2021-40774 affects Adobe Prelude. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40774?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40774 published?: CVE-2021-40774 was published on 2021-11-22 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/prelude/apsb21-96.html

Affected products (1)

cpe:2.3:a:adobe:prelude:*:*:*:*:*:*:*:*

More vulnerabilities in Adobe Prelude

CVE-2020-9680 — High (CVSS 8.8): Adobe Prelude versions 9.0 and earlier have an out-of-bounds write vulnerability. Successful exploitation could lead to…
CVE-2020-9678 — High (CVSS 8.8): Adobe Prelude versions 9.0 and earlier have an out-of-bounds write vulnerability. Successful exploitation could lead to…
CVE-2020-9677 — High (CVSS 8.8): Adobe Prelude versions 9.0 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to…
CVE-2021-43754 — High (CVSS 7.8): Adobe Prelude version 22.1.1 (and earlier) is affected by an Out-of-bounds Write vulnerability due to insecure handling…
CVE-2021-42738 — High (CVSS 7.8): Adobe Prelude version 10.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a…
CVE-2021-42737 — High (CVSS 7.8): Adobe Prelude version 10.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a…

All CVEs affecting Adobe Prelude →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →