CVE-2012-1573

What it is

gnutls_cipher.c in libgnutls in GnuTLS before 2.12.17 and 3.x before 3.0.15 does not properly handle data encrypted with a block cipher, which allows remote attackers to cause a denial of service (heap memory corruption and application crash) via a crafted record, as demonstrated by a crafted GenericBlockCipher structure.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

4.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2012-03-26 19:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:39 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.2% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2012-03-26 19:55 UTC

Last modified

2026-06-16 23:39 UTC

Exploit probability

4.2% · EPSS, next 30 days

Weakness

CWE-310

Record status

Modified

Affected

• Gnu Gnutls ≤ 2.12.16
• Gnu Gnutls 2.0.0
• Gnu Gnutls 2.0.1
• Gnu Gnutls 2.0.2
• Gnu Gnutls 2.0.3
• Gnu Gnutls 2.0.4
• Gnu Gnutls 2.1.0
• Gnu Gnutls 2.1.1

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Is it in your code?

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