CVE-2026-24883Disclosure(gnupg / gnupg)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch gnupg gnupg systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).

gnupg CVEs Back to dashboard

1.0/ 10 priority

Sources & remediation

Patch / fix

https://dev.gnupg.org/T8049

Vendor / third-party advisories

https://www.openwall.com/lists/oss-security/2026/01/27/8

Weakness type (CWE)

CWE-476

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

gnupg
gpg4win

Threat summary

Patch or workaround signal is available
4 mentions across 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 3 signals
Disclosure: 4 classified signals
Peaked 2d ago at 2 mentions (2026-01-27); latest day: 1
4 total mentions across 3 days

Affected systems

Vendors

gnupg gpg4win

Products

gnupggpg4win

Deep dive

Activity timeline4 mentions / 3d

Signal classification1 categories

Disclosure

4100.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-01-27	2	Disclosure2
2026-01-28	1	Disclosure1
2026-02-08	1	Disclosure1

Full discourse4 posts

Open Source Security mailing list@oss_security242d
Disclosure
GnuPG 2.5.17 fixes possible RCE & more https://www.openwall.com/lists/oss-security/2026/01/27/8 CVE-2026-24881 T8044 gpg-agent stack buffer overflow in pkdecrypt using KEM, affects only GnuPG and Gpg4win released 2025-10-22+ CVE-2026-24882 T8045 Stack-based buffer overflow in TPM2 PKDECRYPT CVE-2026-24883 T8049
Post summary
GnuPG 2.5.17 addresses several CVEs involving stack buffer overflows, providing a fix; no PoC, exploit code, or active exploitation is reported.
0321041.3K
4.4K followersView on X
Kazuki Omo@omokazuki253d
Disclosure
SIOSセキュリティブログを更新しました。 GnuPGの脆弱性(High: CVE-2026-24881, CVE-2026-24882, Low: CVE-2026-24883) #sios_tech #security #vulnerability #セキュリティ #脆弱性 #linux #gnupg #gpg https://security.sios.jp/vulnerability/gnupg-security-vulnerability-20260129/
Post summary
The post announces three new GnuPG vulnerabilities with their CVE IDs and severity ratings, directing readers to a blog for further information.
00010117
360 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds254d
Disclosure
CVE-2026-24883 GnuPG Signature Packet Length Vulnerability Causing Denial of Service Before 2.5.17 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-24883
Post summary
A new GnuPG signature packet length vulnerability (CVE‑2026‑24883) that triggers denial of service in versions before 2.5.17 has been disclosed, but no PoC, exploit, active misuse, patch, or debunking information is provided.
0000065
4.0K followersView on X
CVE@CVEnew254d
Disclosure
CVE-2026-24883 In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (… https://www.cve.org/CVERecord?id=CVE-2026-24883
Post summary
GnuPG before version 2.5.17 has a denial‑of‑service vulnerability triggered by long signature packets, as detailed in CVE‑2026‑24883.
00000268
56.5K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	gnupg	gnupg	-	-	-
App	gpg4win	gpg4win	-	-	-

Explore more

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What researchers are saying

CVE-2026-24883

Open Source Security mailing list@oss_securityDisclosure

GnuPG 2.5.17 addresses several CVEs involving stack buffer overflows, providing a fix; no PoC, exploit code, or active exploitation is reported.

Kazuki Omo@omokazukiDisclosure

The post announces three new GnuPG vulnerabilities with their CVE IDs and severity ratings, directing readers to a blog for further information.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

A new GnuPG signature packet length vulnerability (CVE‑2026‑24883) that triggers denial of service in versions before 2.5.17 has been disclosed, but no PoC, exploit, active misuse, patch, or debunking information is provided.

CVE@CVEnewDisclosure

GnuPG before version 2.5.17 has a denial‑of‑service vulnerability triggered by long signature packets, as detailed in CVE‑2026‑24883.