How severe is CVE-2025-62708?

CVE-2025-62708 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-62708 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62708?

CVE-2025-62708 affects Pypdf Project Pypdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62708?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-62708 have an EU (EUVD) identifier?

Yes. CVE-2025-62708 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35624.

When was CVE-2025-62708 published?

CVE-2025-62708 was published on 2025-10-22 and last updated on 2026-10-08.

CVE-2025-62708

CVE-2025-62708 is a high-severity vulnerability in Pypdf Project Pypdf with a CVSS 3.x base score of 7.5. 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-409.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.6
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35624
Weakness: CWE-409
Affected product: Pypdf Project Pypdf
Published: 2025-10-22
Last modified: 2026-10-08

Description

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.

Frequently asked questions

What is CVE-2025-62708?: pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.
How severe is CVE-2025-62708?: CVE-2025-62708 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-62708 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62708?: CVE-2025-62708 affects Pypdf Project Pypdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62708?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-62708 have an EU (EUVD) identifier?: Yes. CVE-2025-62708 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35624.
When was CVE-2025-62708 published?: CVE-2025-62708 was published on 2025-10-22 and last updated on 2026-10-08.

References

Affected products (1)

cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

More vulnerabilities in Pypdf Project Pypdf

CVE-2026-103000 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large…
CVE-2026-102999 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files…
CVE-2026-102998 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF with form field values can…
CVE-2026-102997 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF containing a partially…
CVE-2026-102996 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1…
CVE-2026-102995 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large…

All CVEs affecting Pypdf Project Pypdf →

Other CWE-409 vulnerabilities

CVE-2026-93471 — High (CVSS 8.7): Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropbox esaml allows an…
CVE-2026-112892 — High (CVSS 8.7): Pillow is a Python imaging library. From 4.1.0 until 13.0.0, Pillow's MSP RLE decoder can expand a small file into an…
CVE-2026-97334 — High (CVSS 8.7): The network messaging layer contained improper handling of highly compressed data affecting service availability.…
CVE-2026-68911 — High (CVSS 8.7): Nicotine+ is a graphical client for the Soulseek peer-to-peer network. Prior to version 3.3.11, a modified remote…
CVE-2026-77620 — High (CVSS 8.7): Vector is a high-performance observability data pipeline. From 0.15.0 until 0.57.0, the logstash source feeds each…
CVE-2026-62963 — High (CVSS 8.7): Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket…

Browse all CWE-409 vulnerabilities →