How severe is CVE-2023-21599?

CVE-2023-21599 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 high, integrity none, and availability none.

Is CVE-2023-21599 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21599?

CVE-2023-21599 primarily affects Adobe Incopy. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21599?

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

When was CVE-2023-21599 published?

CVE-2023-21599 was published on 2023-01-13 and last updated on 2026-06-17.

CVE-2023-21599

CVE-2023-21599 is a medium-severity vulnerability in Adobe Incopy 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Adobe Incopy
Published: 2023-01-13
Last modified: 2026-06-17

Description

Adobe InCopy versions 18.0 (and earlier), 17.4 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Frequently asked questions

What is CVE-2023-21599?: Adobe InCopy versions 18.0 (and earlier), 17.4 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
How severe is CVE-2023-21599?: CVE-2023-21599 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 high, integrity none, and availability none.
Is CVE-2023-21599 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21599?: CVE-2023-21599 primarily affects Adobe Incopy. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-21599?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-21599 published?: CVE-2023-21599 was published on 2023-01-13 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/incopy/apsb23-08.html

Affected products (2)

cpe:2.3:a:adobe:incopy:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:incopy:18.0:*:*:*:*:*:*:*

More vulnerabilities in Adobe Incopy

CVE-2021-21090 — High (CVSS 8.8): Adobe InCopy version 16.0 (and earlier) is affected by an path traversal vulnerability when parsing a crafted file. An…
CVE-2026-34708 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow vulnerability that could result…
CVE-2026-34707 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result…
CVE-2026-34706 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by an out-of-bounds write vulnerability that could result in…
CVE-2026-34631 — High (CVSS 7.8): InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write vulnerability that could result in…
CVE-2026-27287 — High (CVSS 7.8): InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted…

All CVEs affecting Adobe Incopy →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

Browse all CWE-125 (Out-of-bounds Read) vulnerabilities →