Opera before 12.12 does not properly allocate memory for GIF images, which allows remote attackers to execute arbitrary code or cause a den…

published 2013-01-02 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-6323

cvss: 9.3; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 7.8%; EPSS 7.8% chance of exploitation in 30 days, percentile 94%
public exploits: 1; Exploit-DB

Opera before 12.12 does not properly allocate memory for GIF images, which allows remote attackers to execute arbitrary code or cause a denial of service (memory overwrite) via a malformed image.

Timeline

2012-12-03 First public exploit (EDB-23107)
2013-01-02 Published

Exploit prediction

7.79% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

EDB-23107 Opera Web Browser 12.11 - Crash (PoC) dos, 2012-12-03

CVSS scores

assigned by	version	score	vector
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

opera.com /support/kb/view/1038/
vendor-advisory
opera.com /docs/changelogs/unified/1212/

Sources

CVE List CVE-2012-6470
NVD CVE-2012-6470

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary