# CVE-2025-68973: In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended…

Source: https://junglewise.ai/threats/cve-2025-68973-in-gnupg-before-2-4-9-armor-filter-in-g10-armor-c-has-two  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-28  
License: CC BY 4.0 with a link back

CVE-2025-68973 · Severity: high · CVSS 7.8 · Published 2025-12-28

In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)

Technologies: [GnuPG](https://junglewise.ai/threats/technologies/gnupg). Vendors: [GnuPG](https://junglewise.ai/threats/vendors/gnupg).

## Quick answers

**Is CVE-2025-68973 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-68973 being exploited in the wild.

**How severe is CVE-2025-68973?** High severity, with a CVSS score of 7.8, published 28 December 2025.

**Which products and versions are affected?** GnuPG. The advisory does not name versions.

**Is there a fix for CVE-2025-68973?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-68973?** Check whether you run GnuPG. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- GnuPG

## Related threats

- [GnuPG gpgsm improper validation of AES-GCM tag length in CMS](https://junglewise.ai/threats/cve-2026-57062-gnupg-gpgsm-improper-validation-of-aes-gcm-tag-length-in-cms)
- [GnuPG stack overflow in tpm2daemon PKDECRYPT handling](https://junglewise.ai/threats/cve-2026-24882-gnupg-stack-overflow-in-tpm2daemon-pkdecrypt-handling)
- [GnuPG stack buffer overflow in gpg-agent S/MIME handling](https://junglewise.ai/threats/cve-2026-24881-gnupg-stack-buffer-overflow-in-gpg-agent-s-mime-handling)
- [In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a…](https://junglewise.ai/threats/cve-2025-68972-in-gnupg-through-2-4-8-if-a-signed-message-has-f-at-the-end-of-a)